Vodacom Pathetic service. Disputes logged numerous times . No feedback no clarity

Pathetic. We have had a contract with them since 2016. We have lodge numerous disputes with them regarding our fully paid up contract or in this case a contract that expired and then automatically went over to month to month without the benefits of the agreed contract. We then cancelled this just to loose more than 700 minutes of paid for call minutes because we went over to pre paid . Today we phoned again. The lady said we cannot log any complaints again because the other 3 is not resolved . Our last debit order went off and was higher than normal. So we now have to pay it seems for cancellation on a month to month bases. How mat times does one have to phone and re log a compliant and how ma y times must one hear it is esculated and how many times must one not be phoned back by a compentend manager that can resolve the issues and give clarity . It is pathetic ***