Cell C bad service

I am so tired of Cell C bad service. It s 9 month's that I have been calling them to resolve my issue.,in May 2023 I changed my direct debitftom the 27 to the 1st but yet every month they take it on the 27th and charge me R70 for there mistake plus I pay R105 bank charges then if I pay only my monthly payment they randomly take the rest of the payment during the month they take unauthorized payments, I spoke to managers, cases gets open and close they pretend to call u with a miss call so before u can answer in a second the call drops, I want all my money back they took from me and my bank charges, I struggle enough and this makes me very anxious and stressed out and it affects my credit scoring