Shocking Service!

I recently upgraded my data package with MTN recently. My old package included 10gb day and 10gb night but have recently upgraded to 20gb day and 20gb night. The month that I signed up I was told that I would old receive our data pro-rata which I understood but the following month I should have received the full amount. When my data ran out I phoned the MTN call centre to query how much data I had received and was very unimpressed to find out that they had only given me the amount from our old package - even though my account has been debited for the new package! The call center actually had no idea about the new package i was talking about and said that they knew nothing about that deal. I went to the Pavillion Store (Which is where i did my upgrade) and they said that they would have to submit a query and we would only hear back in 2 days time - how inconvenient!!! I left in anticipation for their call which i never received so on the third day I called them to find out what was going on only to be told that they sent the query to the incorrect department. This is totally unacceptable! I have all the paper work for the upgrade and my account has been debited for the extra amount but they can not provide what i paid for and cant even get back to me to keep me updated on the query! 5 Days later I am still sitting without the data that i paid for and no answer as to why!!