Poor follow up service

I ordered the samsung s7 and was informed that I would get the VR headset gear when I get my phone. All I need to do was claim it online. Had issues doing so and called in to be told the promo is over. On the initial sales call The consultant had distinctly informed me that I will get it as mtn has not reached the 20000 units yet. I placed the order under this pretense. Shareeka took over the follow up call and I explained the situation to her. To which she said she would escalate it and I will be contacted the following week. 2 weeks passed and no call. I called in again and spoke to Alston Singh who informed me that nothing was escalated. I again informed him of my situaction and was informed that he escalated the issue and I will be contacted. I requested call recordings and was told that mtn will not forward me any information. 4 days have passed and no one has called me. Today my wife's contract which was just renewed has been changed to prepaid. Absolutely pathetic service. I was mislead when taking the contract and now there is no accountability. Not to mention the blunder with my wife's contract. Being silent does not mean the situation goes away. Empty promises