False Advertising and Poor Customer Service

My contract was due to expire on 12/06/18. On or about 11/05/18 I visited my nearest MTN shop to view the catalogue and decided that I would upgrade to a Nokia 6.1 on a MTN Made for me M package, which included a once-off free 30G data bundle valid for 30 days. (See page 31 of the May 2018 catalogue) There store clerk said that he would pre-order the phone for when my contract expires, to which I agreed. Then, on or about 15/05/18 I received a call from a person by the name of Zain to discuss the upgrading of my existing contract. He informed me that I could conclude the upgrade telephonically and that he would e-mail the contract to me, which I’m still waiting for, and that the phone would be delivered to me via courier. My contract was upgraded on 17/05/18 and the phone was delivered shortly after. However, there was no sign of the advertised 30G free data. On Thursday, 24/05/18 I called the call centre to enquire about this and a query was logged. Later that day I received an SMS (Ref. No. 1- ********** 4946) informing me that the query has been resolved. Phoned again on Friday, 25/05/18 and was told by Fezeka Mhlonti that MTN is waiting for me to provide them with a copy of my contract so they can determine if I qualify for the free data, and gave me her e-mail address. As I did not have a copy of my contract I called the centre again and spoke to a gentleman, who agreed that it was ridiculous of MTN to ask for a copy of the contract and said that I had to wait another 48hrs. On Monday 28/05/18 at 9:42am I received another SMS Ref.No. 1- ********** 5026 to say my query has been resolved and to wait another 48hrs. It’s been almost a week now and still no sign of the promised data. I’m now convinced that MTN has no intention of giving me the 30G data as advertised in their catalogue, as another 48hrs has come and gone and still no data. Very disappointed! False advertising??