Not getting what is in my contract and paying for it

I upgraded my contract in May 2020 and was told that I would get a promotional package which included more data per month. I have phoned in several times already and then they say tickets will be opened and then the tickets are closed without the problem being rectified. Every time I call I am told that they can see that my data has not been loaded yet and it is in my contract.

Here are 2 reference numbers that have been closed without the issue being solved. *** and ***. This is unacceptable as I am paying for something that I am not getting and I am forced to spend additional money to buy data.

I have also requested a copy of my contract which no one can give me. I am told to phone this number then that number and being transferred every time to no avail. This needs to be sorted out immediately as I am not getting what I am paid for.

Really disappointed in MTN and I have been with them for many years now.