Missing data, axxess unable to assist

I was told I need to switch from Cell C to Telkom or MTN. I went with Telkom which offers 60gb + 60gb. I was given a prorata amount of Gigs which was 45 gb. I inserted the sim on Sunday 16 February 2020. Thursday 20 February 2020 my 45 gb we depleted. This is impossible. When I inquired I was told I used all my data even though I am telling them it is not possible. Axxess told me they would send me a report showing my data usage. This report was on sent on 22 February 2020 after numerous emails. However, the file they sent could not be viewed because the excel report was *******. I have sent nenerous emails but I'm not getting proper assistance. I need to know where all my data went.

Axxess are just giving me generic answers. The service is just pathetic. I don't want **** apologies. I want service which I pay for.