MTN - You have dissapointed me and costed me extra money!!!!!!!!

I have shifted from another network to MTN lately. I took out a contract and added 2 gig of extra data. The 2 extra gig costs me R100 per month.

However, for the second month now the 2 extra gig was not loaded. I went to the shop last month and the deal (with the codes) was correctly loaded. The papers I signed also have the correct details on them. The MTN consultant at the shop also logged a querry (The problem is NOT with the in store consultant at all! He is brilliant).

Today the wrong amount of data was loaded again. Customer care lady just said sorry, they cant see a querry / extra 2 gig on their side, which is shocking as the systems in the store show the correct details.

What now? Must I keep on buying data (@prepaid rates) or what? THis is shocking!!!!! How long must I wait to get this resolved?

Is MTN going to refund me the extra money I had to spend on data due to not receiving my data, as I signed up for?

I will def not reccomend MTN to anybody if this is the type of service I get from customer care.