Telkom Billing

I am a contract with Telkom, taken through iStore. Everything has been fine as far as billing is concerned , we know the service doesn’t always work but i have been accepting of that. Problem starts when they take out R1900 out account Randomly so i reachout to them, the first consultant says its because my account had a missed payment so i say check the last payment made for me and she says April 29 i ask her since we are still in May it doesn’t make any sense to me she says it doesn’t make sense to her too so she will escalate it and i must wait for a call. 3days go by i get no call so i reach-out again this time to an even more confused consultant who ends up hanging up on me when she can give me any answers last i go to the store in Gateway they only offer to have somebody call me cause they don’t deal with Billing, no one ever calls. Today I’m sitting here being triple charged and my lines are locked with no resolution whatsoever. This is a shame cause im locked into a contract with a company who is clearly in Shambles and i cant do nothing about it