Cell C R500 50 Gig day and 50 Gig night data finish in 1 to 2 weeks twice

I bought Cell C data on 14 Nov 2021 of 50Gig day and 50Gig night and it only last about 2 weeks that usually last 3 to 4 weeks depending how many times I stream Netflix, I phoned in on the 26 Nov 2021 and Cell C call centre individual told me that in 24hr to 48hrs they will call me to explain what happened to my data, until today no one called. I bought again 50 Gig day and 50 Gig night data for R500.00 on the 26 Nov 2021, on 02 December 2021, the day and night data was finish that usually last 3 to 4 weeks, I emailed Cell C, no reply. I will not buy Cell C data again. Bad service and I lost about R1000.00 in two weeks.