Appalling Service

I am so tired of telling the consultants at mondo to cancel my contract ... Its started with a false sale that was done where i won the case of a contract that was sold to me ...the contract I agreed upon was 30 GB for R 100 ... The 1st was not debited so I received an SMS from MTN stating that i owed R641.53 ...which i was perplexed because I know I don't any network that is above R100 .... I have the Reference of the case I won... I had to call them for a follow up every week... I asked them to cancel and till this day ...Nobody is saying anything... My credit score is messed up of Mondo... And now MTN says I owe R1305.02 for a cancelled contract ... Because of Mondo ...MTN IS ALWAYS SUSPENDING NUMBER and I have a business and family that need to call me and always inconvenienced by Mondo... The service is just appalling ... 3 months of me life has been in distressed because of Mondo... Seriously mxm