Shocking Telkom Service

I'm still utterly shocked at the service I have received over the last few working days. For some reason my Night shift data is not moving at all and weather at night or during the day it chows my normal data, for example at 1am this morning my once off data was depleted even though I should've been on night shift data. As we speak my remaining data for night shift is over 4GB while my normal data is under a gig. This is their response "Case ********** 9 refers our records indicate no unusual Once-off Telkom Mobile Night Surfer DATA depletion/ allocation. " How can you guys not see when I've been online and what data I'm using, I worked for one of your competition and I know this is possible. I really thought you guys were way better, was I wrong?