Cell C data *****ers!!!

I bought 100 gigs day and 100 gigs night on the 21 of September my day gigs finished within 3 weeks. when i asked what happened they tell me to wait two working days for feedback then they only responded back to me after multiple times calling them after the two-day turnaround time passed! they send me a report no explanation of what happened they simply send me a report saying I used the 100 gigs in 3 weeks!!!!! the report is technical no one even bothered explaining it to me how to interpret or how it works I always buy that package which lasts 2 and half months/ 3 but this time it only lasted 3 weeks and they expect me to accept that i used 100 gigs in 3 weeks. Data *****ers!