30 gig data false advertising

I opened a new contract on 11 April at canal walk MTN which stated that I would get a free 30 gig data. To this date, I have not received this data. I have tried numerous times to call the store and I never get an answer. I have called 135 many times only to get an sms with a reference number saying the quote has been escalated and then resolved and that I should call again if not resolved in 48 hours. Needless to say the quote has not yet been resolved and I have been on the phone with them for about an hour in total with all the calls I’ve had to put through to try to get my 30 gig data upon opening the new contract for 30 days. This is false advertising as it’s almost a month later and I still haven’t received this and bad service on MTNs part and I’d like my query to be resolved ASAP as the client should not have to go back and fourth and waste their time calling in every time for something that should have been done right the first time. Totally unacceptable.