Telkom deducting additional debit orders without cause or warning.

I've never had a good experience with is service provider but today is the last. I woke up to an additional deduction that went off my FNB account, double my usual debit order amount and in the middle of the month? When try to query it I only get sent in circles or receive "self help" services. So, is *****ing from customers the plan now...? Because no one can explain this deduction or fee to me.... I plan on getting this transaction reversed and moving to a new service provider. I'm so done.