MTN useless after sales service

I am utterly discussed with the after sales service of MTN.

I have the wifi special of the 10GB anytime and 10GB night express but if you were one of the first 2000 customers of the month ( witch I was) then you receive 20GB day and 20GB night express.

I realized that they only give me the 10GB day and 10GB night instead of the 20GB/20GB.

After numerous calls to the call center I decided it would be easier to go into the shop. and after I sat and waited more than an hour to be helped and another lady loosing her **** for also waiting for an unnecessary long time I finally ended up talking to someone and he agreed that there was something wrong and said he logged a query at head office and that they would get in touch with me within 72 hours. 96 hours later I still haven't heard anything from them . When I called customer care they said no query was logged and the Somerset Mall shop is not answering their phone. Now I have to take off from work AGAIN to go sort this out and I have no support what so ever from MTN .

I was with Vodacom for years and never even had any problems not even a query .