No internet access for five days (still ongoing) after buying MTN data

I bought data from MTN (10G, i.e., 5G anytime and 5 night express) on the 19th November 2021. I have been and still am unable to access the internet. Previously, when I dial *136*1#, the balance was showing as 14 kb which is equivalent to zero data. Yesterday morning, after several calls to MTN, there was a change, showing only the Night Express data. Since I don't work between 12.00 am and 06.00, I did not check if that was active or not. I called MTN to notify them of this. The agent I spoke to said she was going to escalate the matter and suggested that maybe I buy a few MB whilst waiting as the process takes 24 to 48 hours. I must say she was not being malicious, this was coming from a good heart out of concern for my frustrations. Today the proper balance is reflected when I dial *136*1#, BUT STILL I DO NOT HAVE INTERNET ACCESS. I called MTN again, now I am told that I should wait for the process to be resolved, which may take up to three working days. And note, this data that I am still unable to access on the 23 November is said to be expiring on the 19th of December and it is going to be added to my account as I have a contract with them that gets debited from my bank every month end. This means that I am going to be billed for something I did not use and I have no control over it. MTN, this is not only **************** but an indication that you do not see time as a valuable resource to me, I am now gatvol.