Cell C customer service. What a joke!

I was retrenched in February 2016 due to severe illness. Was told by N1 City Cell C to produce letter of retrenchment. I gave this letter in at Golden Acre Cell C shop and got a reference. I have 2 contracts with Cell C. Cell C was instructed not to debit my banking account as I have no income and I would pay cash. End of March money was deducted as well as end of May. When i phoned Cell C customer care, I was told that it is impossible as their info shows that there was no deductions. Well, I am no idiot, irrespective of what Cell C might think and I can read a bank statement. It clearly shows that money was deducted from Cell C. Not only did Cell C dishonor my request, they cost me money as my bank put charges on my account for insufficient funds. Today I was told that the request send in at Golden Acre was applicable to my Tablet only and did not cover my Cellphone. What a ****** joke. How the hell can I ask for one contract to be exempted from going off on my bank account and not the other? This goes to show that Cell C just don't care. I am so disgusted with this no care attitude. Who is going to refund my bank charges? Am I being treated like this because I have a crippling disease or should I just eeny mini miny mo and accept whatever excuse or reason it it falls on? Pathetic to say the least. Absolutely pathetic.