Disgusting service

We bought Wi-Fi , 40G finished within hours. We went and complained and we were asked to pay for the router and other cost so as to cancel the contract. We have recently discovered that Cell C still shows our account as unpaid, creating a bad record which is a lie. We have tried to contact the cell c branches but they inform us that the people who can help us are on strike. Cell C has poor customer services, they probably do not reconcile accounts after payments have been made and they blame it on clients. Their so called legal department never answers the phone