Line down yet cap is depleted?

We have had a 100gb fibre line with telkom for months now, this month is the first month that we have reached our cap, even though it has only been 14 days. A bigger problem is that our line was down for 4 days and yet on the 11th I received notification that 80% of our 100gb line had been depleted. I contacted your call centre to report the problem at 13:30 on the 11th and spoke to Thabang. He told me that on his side it said that only 40% of the data had been consumed, I explained the inconsistency with my personal profile and he assured me that he would escalate the matter once his system was back online. I requested a reference no. on numerous occasions to no avail. To date I have not received a notification regarding my dispute. On the 14th of October I was notified that I had completely depleted my 100gb data. I once again contacted your call centre and spoke to Mandisa at 17:41, she was not helpful at all and put the phone down in my ear! This is unacceptable!! I phoned back and the only assistance I was offered was an email address to forward my dispute to. This is not ok. It is impossible for our account to be depleted so early in the month with our line being down for 4 days (please check your records regarding fault log and technician dispatched). I work online for my income and it feels as if Telkom is steeling from me.