Emirates bad service and reward program

I booked an economy class ticket one way and return business class ,like I sometimes do . On Thursday the 18th I spoke to the Emirates call centre at the platinum desk to pay for my ticket and asked the lady ,to do my upgrade from Johannesburg to shanghai ,using the platinum allocation but she informed me the it’s too late to do that , so she can only do the Dubai to shanghai upgrade and informed me that when I get to the airport and if seats are available then they will reverse the miles back for the shanghai upgrade to do the full upgrade . The shanghai upgrade was plus minus 60,000 , I then did the shanghai upgrade using my app the next day, then proceeded to the airport for my check in and I asked the check in staff who assisted me , if seats were available and he rep**** yes , so I informed him that I wanted to do the full upgrade and he must reverse the shanghai upgrade. He on the other hand informed me , he cannot do that , as his not from emirates and I need to speak to an Emirates staff , who he pointed out to me . Sandra the ticketing lady at the airport Emirates sales office, she also informed me she cannot do it , only staff of skyward can do that(1). I then called the platinum desk and spoke to Jose who assisted me but at the same time informed me , I need 2000 miles more to do the full upgrade and I can purchase it on line. I then informed him I will do so , he also informed me that the staff at check the check in counter already checked me in so , now he cannot , so I went back to the gentleman, who unchecked me and Jose proceeded to reverse the shanghai upgrade and return my miles. I battled to purchase the 2000 miles due to no computer being available, but nevertheless I did it . I went back to the check in agent who preceded to do the full upgrade. The agent ask me to sign a confirmation of miles being deducted for the full upgrade , I then took my boarding cards and proceeded to immigration , where I noticed that I had one business- jnb to dxb , and the other economy Dubai to shanghai, so I proceeded to the lounge and I then informed the lady at the deck , Valencia,that the gentleman made an error with my upgrade , she then gives me a long story about the ticket is correct and there’s nothing she can do , so I ask to speak to her supervisor but she refused for me to speak to her supervisor , so I called the platinum desk again and The agent Alex , hears my long story again , and she agrees the check in staff made an error , and she would like to speak to Valencia to off load me so she could redo the full upgrade .Then I hand the phone and they start to disagree about the upgrade. I was given back the phone while Alex was waiting for Valencia to get the flight controller to off load me but during the wait , Valencia managed to print the 2nd leg boarding pass upgrade and by then the controller already offloaded me and Alex said they can reload and that wasted my time of 25 minutes (2).And I then thought I done WOW , but to my amazement when I landed in Dubai , we find our plane had a puncher in the air thus we landed late for our next flight and there start my issues again , I was handed an economy boarding pass from Dubai to shanghai , I then informed the lady this is not correct and she informed me to go to transit desk and speak to them , no apology, no help , just plain rudeness. I then go to the transfer desk and speak to a very helpful gentleman, Mr Mohamed Rehan (id 228185) , who was trying to assist me and my staff of 2 (who was traveling with me) in finding us other flights as now my hole china trip ( other plane ticket and hotels , must be cancelled and rebooked at my expense due to emirates incompetence and the loss I suffered , no compensation ), after 1 hour he informs us , the flight that was given to us was the best option , so what can we do but to accept it, like beggars, I then ask him about my flight from Dubai to shanghai and he informs me , business class is over booked and that’s why they downgraded me and to add insult to injury , i receive an email from the skyward desk informing me that miles will be deducted for the dubai to shanghai flight which i flew business class and my account will be placed in a negitative state to recover the miles. In Dubai I called the platinum desk and spoke to the agent who again said that there were first class seats and would try to allocate one for me and I must call back within an hour and when I call back I had to restart my story again like a patriot and then requested to speak to a supervisor who said he understood my problem and there’s nothing that could be done accept for me to write to Emirates customers service, so what good are these supervisors , if they cannot have sufficient powers to make a decision.