Overbilling - *********!!!

Purchased a 100GB Cell-C LTE-A service with them in November. I was told the sim would arrive during the December month. They called after I closed at work and was on Holiday. We rescheduled to the 10th of January, only for them to deliver on the 14th.

Two days later a debit order of R424.01 goes off my account but I've only been allocated 54.84GB of the 100GB (I assumed they included the setup fee in the R424)

On the 25th, R862.43 goes out of my account. I query this, they say it's the setup fee and a pro rata for the December month. And also The premium for January

I logged a ticket with their accounts department on the 25th. Only got a response from them today, with a very firm grasp of the obvious: a list of what I was "charged" for. These were noted in my initial email clearly and the statement was attached to that email.