third time without feedback

Dear Telkom as I wait patiently for you to give me feedback and explanation to what I owe you for you go and debit my account with R4154.67. Your company is exploiting us as customers, after you took that much money how do you expect me to live because the phone was returned back to you with the 5 days period. What exactly am I suffering for? Do I have to contact my lawyers in order for me to be taken serious, you have caused me stress and in return it has affected my exams. This is the last time I try to communicate with you my self, you may take me for granted it is fine but I will deal with you the legal way. I won't even call your call centre as they are useless and ***********. Previous ref is SM108762