Bad Vodacom

Vodacom informed I could do upgrade. I said yes. Was explained everything. Said it's bit high isn't there some discount on the airtime? The person said no. I said it's bit high and I know retentions give discounts. Upgrade went through. I accepted. Even saw the changes on the vodacom app. That was sales. Then I remember retentions can give discounts. I called. Spoke to Imlam. He said he will put in one or other request to have it changed. Gave me a ref no. He said I will get sms when it's done. Then he said he will check on his side when it's done and he will then call me to give a discount as I am a loyal customer. I got sms his instruction was handled. I waited. He never called me back to offer me the discount. Then the ugly happened. I called client care. They argued retentions cannot help. I then called retentions directly. A woman told me that he reversed the upgrade and they need to get handset back. I said Imran told me after request to try to help me to get some discount, he will do it by offering same package but with some discount. I know this by know as when I upgraded my son's phone, they discounted his airtime. I said to the woman that I already took phone to bank and loaded all my apps and even bought screen protector and backcover. So no need to come get my handset. Keep package as is although I am not happy how I got treated. So I instructed her and told her I will keep package as is and no need to take handset. I even told her that I got three sms'e to respond to. One I had to do the Sim swap. Vodacom helped me with that. Second sms saying RAM couriers can come to collect handset but I must inform Vodocom if they should take handset or not. Called vodacom and said not to take handset I accept upgrade. Third sms stated upgrade has been done. I even mailed vodacom forms back where I accepted the upgrade. Guess what??? Vodacom still sent RAM couriers to collect handset. I showed couriers my proof of accepting upgrade and they left. Vodacom is confused. I say this out of above already mentioned and also for fact that when I call upgrades I get sms saying I can upgrade in 2 years time (after I did upgrade) and my vodacom app shows my new upgrade monthly amount and airtime and data. That is correct. It confirms my upgrade. My concerns? Why does employee says he will make note and call me but never calls? Why did he not say if if he wants to assist me with maybe airtime discount from retentions side, that they may want handset back? When I instructed and said very clearly I will keep contract and phone - still they sent couriers? This even after mailing upgrades accepting the upgrade. And like I also said - my upgrade shows on the vodacom app and on robot Tobie.