Cell C provides disgusting, stinking , appalling service to their customers

I upgraded my contract with Cellc in April 2019 already and took out a Top up contract for R199 per month, I have now received a sms from them stating that they will debit an amount of R315, to which I called them and advised them I will not pay that amount as its not the contractual amount, I did not take out a top up contract to have unexpected fees and debit orders going of my bank account.The call center agent I first spoke to was useless and transferred me to upgrades who did a worse job, the the web complaints person called, I explained to her and she basically told me to go get lost as they have charged a prorated amount and that is that.I have never ever in all my years and life received such stinking disgusting customer service from any service provider.I asked for a copy of my contract in writing and have to date not received it, i also asked for a copy of the recording where they I was told about extra amounts, they advised me that they cannot and will not provide that .Their network is useless most of the time and now they want to ***** from my bank account. I am appalled by this institution and will never ever have any more dealings with them ever again , and I will not pay them more that what the contract state. They do not treat customers fairly, instead they ***** from their customers.I am totally outraged at this poor display of customer service.