Bad service from CellC

I took a router and SIM contract in December which I received in December. Then they serve another router in Jan 2024 which I returned in Jan. End of Jan they billed me R480 which I reversed and told them to collect the agreed amount which is R188. They never did that and they never called me. Today they debited R931 and told me it is because I didn't cancel the second contract. Even if I didn't it should be R188 +R188 for a double payment not R931. On 2nd Feb I asked CellC via email for a report of my data usage because they say I used 2gigs on 1st Feb which I dispute. Until this days 22nd Feb 2024 CellC still hasn't sent the usage report. I called them today and was told a call would be logged and there is no turn around time. I want my money back and for CellC to collect the router and SIM and cancel the contract.