Telkom Astronomical Billing

Good day, I am battling to get through to Telkoms Customer Care and I am terribly annoyed and frustrated at the billing of my account. I am on a fixed LTE contract for R129 per month for 10GB data. However, in May I was billed over R600 for "out of bundle" usage which is incorrect. For the month of June I did not use all of my data in order to check how I would he billed and again it is way above my contract amount at R500. This is absolutely ridiculous and **************** and telkom just couldn't be bothered!! I want answers and for this to be fixed or I will be stopping these debits from going off.