Cell c not debiting from my account and handed over my account

I went to Cell c store in Dec to take a contract Huawei P Smart 2021, I submitted my required documents and I was approved, Jan & Feb they didn't deduct according to our agreement, I made initiative to go deposit the money(R500) and told them they can deduct the outstanding month end still they didn't not deduct, I called customer care mid April I was told to consult with my bank to find out why they couldn't debit from my account, my account was fine and had no difficulty from the bank side, on the 29 April cell c took R900+ from my account, I didn't quiry the money, during mid May I called Cell c to change banking details I was told that I will be called in 2 days to confirm my details and get my number enabled as it has been permanently disabled & that they've handed my account over(for something I don't know what for) on the 2-June-2021 I called cell c to find out why didn't Cell c deduct as per our agreement they said because I have an outstanding amount of R4000+, when I asked the consultant for his name & told him Iam going to report them on Hellopeter he started acting strange as if his line is bad, I couldn't take hi full name & I decided to hang up,

I'm seriously not happy with cell c how it operates and fact that I've been making means to follow up with them with my account they have my alternative number for incidents like these, cell c has messed up my credit score..

Cell c should call me back and make sure my account is up and running according to our agreement My contact details ***