MTN Double Data does not exist

I have never experienced such a bad service in my entire life. I have signed a contract for double data on the 6 of January. Instead of getting 10GB + 10GB=20GB. I got 5GB for the month of February and only 2GB in January. I then reported the concern to Job Kire***a at MTN Cresta Mall, who then told me that the prorated data is correct for the month of January, even though I was try to explain to him that the pro-rata of 10GB cannot be 2GB on the 6 of January. On the 21st of January only got 5 GB. Went back to Job Kire***a MTN Cresta Mall on the 2 of January 2018, he then indicated that the with the Technical Department to resolve the issue. Up until today the issue is not resolved but it's marked complete on their system. I tried to explain to Job that as an end user the issue is not resolved because I cannot c the data m paying or signed a contract for. He told me he cannot help now. I'll have to wait for the next top up of which he doesn't know if I'll get the correct data. I told him that I don't appreciate the customer service being provided and I will escalate the issue as I'm paying for something that I'm not getting. Worst he told me I can escalate and hang up the call on me. This issue still note resolved up until today. This is a general issue because their systems are not set up correctly but they have placed their product in the market for sales. MTN CUSTOMER SERVICE IS PATHETIC.