********* business conduct by Telkom mobile

I have a two contractor's with Telkom. I originally app**** for a fixed contract where I have to top up airtime and data. This year I renewed my contract for the second time and prior to lockdown my billing was correct. They charged me extra in March, April and now I see May. I tried calling in due to social distancing however had to go to the Glen store last month to rectify. It was confirmed to be set back to the original contract however I see the bill for May is an additional R350, March R200 and April R300. This is **************** and I'm not being helped. I will be going directly to the Ombudsman if my contract is not reinstated back to the original contract and my account not credited with the amount overcharged.