Pathetic Service

I Recently took a contract online through rewards co and was told by the assistant over the phone that my sim swap will be done via the phone. when i received my phone it was the incorrect color and was then told the swap cant be done over the phone. I then took the phone to the MTN store and they advised me that a sim swap couldn't be done as the online team skipped a step. I then returned the phone at the MTN store and was advised to call Rewards co and cancel my contract. I haven't been receiving feedback unless i call and express my frustration. Today i received a cancellation bill of R22 455.31 for a phone that i couldn't even use due to the *********** staff. i will never support MTN or Rewards co ever again. This bill is not for my account and will not be paid by me.