Application not complete

I app**** online for the Nokia 8 + 3310 summer deal flexi 150 for R499 pm. I also requested that i have my MTN number ported to the contract I was applying for. I didn't receive any notification that my application was successful, i also didn't receive any notification as to when i will receive the phone. I called customer service to ask what happened to my application, I was told that it was approved but there was an error, so to my understanding the application didn't go through, so on the 24/02/2018 i went to the Zevenwacht branch and got assisted by Melanie in applying for the above deal. I get an SMS stating that there was a port request, shortly after Melanie called me to say that the port was approved however she couldn't complete the application as there was already 1 pending in my name. despite being told by an agent that there was an error on my online application. On 26/02/2018 I received the phone despite what i was told from the agent but realized that my number wasn't ported. I called in to the porting department and spoke to Daniel the Team Leader, he advised me that the port request was approved an that its in a waiting state and that i should return to the branch to complete the process just to be told by the branch they cant do it due to the error. I was told by a sales agent that i need to reverse the contract and apply again and that it would take up to 10 working days just to have the phone collected. Then there's the issue where my next application might get declined due to the attempt made at the branch. Why cant this so called error on my contract be rectified? why would i need to return my phone at the risk that I wont get approved and might have to wait 3 months again? this is so unfair that I have to go through so much trouble to take out a contract form Vodacom