Telkom is just a ****

I have been calling & going to the store for a simple billing query to be sorted where im charged 200% in fees for a debit order that keeps returning from an account that I closed. I called yesterday & finally got through to someone only to be on the call for close to 30 min of which I was placed on hold for 80% of the time. I was eventually promised that the manager will call me because 2 of the call center employees in the Billing department couldnt explain the costs. I am still waiting for the call & the wrong account was debited again in the meantime even though the agent clearly shared my new bank details with me yesterday. Before even knowing it will not be honored, they already added charges to my account on 10 Sept. Now looking back at all the debit orders I finally see that every month had a different debit even though its a top up contract. Telkom is just a ****