Very bad

Bad customer services 1 number. I call numerous times for a Manager to call me up to date no manager has never call me and give me a break down on why my contract account was in a credit September month and then all of a sudden my account is it arrears of R1600. The mistake it with them no one is will to fix it and when call the customer services contact centre agents are so arogent that they don't transfer you to a manager but instead debating with you and transfer you to a customer service consultant and all I have to do is happily be the customer that gets taken for a ride. I have had it and want someone to give me the break down and tell me how is it possible to go from a credit to arrears. I hope for my sake and for cellc sake they are not charging me for an installment for September! And cell c has a nerve to send me a formal letter that I should settle the outstanding amount within 7days without anyone being formal about the process.