Telkom LTE ****

I am so ****ed off and I'm even shaking as I write this. Telkom has done it once again, ******** people with data usage fees that make no sense!!! My contract is for R249 for 5gigs of data... Which is expensive if you ask me. Last month I got billed an amount of R450 and when I call the call centre I'm told it's because I overused my data... Which doesn't make sense because I received a message saying my internet service has been suspended because my data has been depleted. This month you decided to double it and charge me R750 on data that I hardly even use???? Telkom you better give me answers!! This is damn ridiculous