Overcharged every month on SIM-Only Data contract

I have been charged over R360 per month for a R99 per month data bundle. The data bundle was a 24 month contract for a SIM-Only Data plan with no device, A 6gigs data bundle (2gigs anytime data plus 4gigs Night Express). I can only trace my bills back 7 months since statements are no longer e-mailed.

After logging in I was absolutely horrified to find out that I have been overcharged more than Triple the actual amount every month, possibly for the entire contract period. I was completely unaware of these exorbitant charges since I am a loyal MTN customer with 2 contacts for over 5 years setup for Debit Order.

This reflects poorly on MTN's accounts department and exposes its False Advertising on SIM-Only Data contracts. As well as its unnecessarily complicated billing breakdown for these data contracts. Charging them as separate purchases instead of one simple data charge.

I went into a store to renew or sign up for a another deal and there's an R89 for 8gigs SIM-Only data plan. Now I'm completely reluctant to sign up for any data contract with MTN and I DO NOT Recommended it.