CellC phone repairs

i entered into a 24 months cell phone contract with CellC around Aug 2019. They gave me a phone (Huawei Y7 2019) that had software issues. They took their time to take it into repairs whereby i had to frequent the Key West Store more than 7 times including fighting for a loan phone. It was then taken to repairs towards end Nov 2019 with a broken screen out of frustrations. When it got there i was requested to pay R1500 up front for screen repair. I told them the Key West Store did not inform me about that and also the phone was not sent for screen repairs but for software issues. My words fell into deaf ears. I took the matter to a law firm and they could not help me. My phone was returned from repairs without my concern by the Key West Store and they never called me to come collect it. I left it whilst paying for it until March 2021 when i decided to let them victimize me in agreeing to pay R1500 for the screen. I had 9 contracts with them and wanted to cancel all of them since Jan 2021 until early March 2021 when i managed to cancel 7 of them. The phone was returned from repairs from sms prompt on 06April2021. Called the Key West Store and they could not help. Went back to Repairs on 07Apr after checking again with Store and they assured me of a delivery made on 06Apr. Only to find out it is indeed been delivered. When open i found a brand new device (Huawei Y7p) and without explanation from Key West Store. I have been called 3 times so far by customer care agents to pay the R1500 that was split into 2 payments. i explained to them that the amount due was for screen repair but now which screen because the whole phone has been replaced. There are still coming back to me. On the other hand i am now been invoiced for 7 cancelled contracts that i was sent from pillar to post since Jan 2021 until early Mar 2021 and what for, i do not know as most of them had reached their lapse period in as far as Nov2020. I HAVE SUFFERED PAIN FOR THE PAST TWO YEARS SINCE I HAVE BEEN WITH CELLC FOR MORE THAN 8 YEARS! IT IS NOW TOO MUCH! PLEASE HELP