Bad treatment from cell C

I bought a cellphone a cellphone via one of cell C agents who calls to offer clients cellphone contract in March 2022. I specified the cellphone I wanted and they said they have it and it was delivered after few weeks. On the day I received the phone I realized that it was a wrong phone. I called customer service of cell C and I was told that I must give it to the courier company they will send on the next day. The courier company came the following day, took the cellphone and I informed cell C, they send I must give them the proof that has a certain number and I gave them. Now they are sending me invoice claiming that I owe them R11000.00.

I have been talking to cell C for months, now they gave the account to collectors and I have been saying give me the cellphone and then I will pay as you cant have the cellphone but expect me to pay.

My cell phone number is ***.

Shalom