MTN daily data.

I'm not happy with mtn's service. I purchased a 2gig daily data, which is supposed to be allocated on my router daily at 00:00 l, then expire at 23:59. That is not a case. Yesterday it was allocated after 2am. Today it was allocated after 4am. I called their call center around 2am two complain about the query. The response I got from the consultant was shocking. She said if I'm not sertisfied with this type of data I should purchase a different one. According to her, I am not suppose to complain about the time they allocate my data daily and the time I lost. The worst thing she has done is that she dropped a call when I asked her to escalate the call. I had to call again in order to speak to a manager. The worst thing about mtn on this daily data deal is that the data will expire at 23:59 even if it was allocated at 6am or 4am instead of it being allocated at 00:00 as it should be. At times it expire even if it was not finished. I demand mtn to compensate me for the time I have lost from not using my data. I might not finish the 2gig today and I do not expect it to expire at 23:59 because it was allocated late.