Bad Service and FALSE advertising

Wanted to cancel my contract, but was convinced otherwise by a consultant to pay R109 for 10GB data, 150min and 50sms.. this was June… since then my account was debited with R199 in July & R170 in August.. but did not received the data as per the discussion. MTN employees and system is *********** and will not advise to anyone.. This is not the first time having this issue.. as I paid for 3 years for my contract for data and minutes not received and MTN could not resolve the issue!! So what now TWICE in a Row??