Freaking ***** company, the worst ever

As usual, just empty promises from Cell C. After Lungi phoned to say they will revert back to me, she did in fact get back to me and told me that Cell C was overcharging me. She promised that someone from accounts will contact me to see how they can refund me. Nothing happened. Another week has passed, and guess what????? They freaking double charged me again. Handling my money like it is their own personal ***gy bank. Debit orders after debit order. So what now???????