Accounts department and no manager available

I am so sick of Vodacom's excuses from the end of last year 2015, I have endless problems with my contract it is not rocked science, if it is not over billing my account they make mistakes with my account, over charging and then they say it because you put extra data on your phone which is impossible then they deduct money off my account and it goes back in my account 1. I am getting penalised all the time because of them from the bank and then I have to fight not to pay R100 penalty at Vodacom the bank says they have no idea why Vodacom is doing it.

Now when I went online I saw my account is running once again to R289 after I phoned the call centre in the beginning of the month to make sure I do not get any more surprises from Vodacom, and asked them to make sure it does not exceed my contract of R260.00 they promised me everything is sorted once again false promises as there is incompetent people working there I cannot wait for my contract to expire next year January 2017 I will go to another company that keep their promises.

I want a contact number and e-mail from the accounts manager that I can speak to in the future regarding my account if I have issues and I want this issue solve with immediate effect, I am awaiting your reply herein, and would like to know what new excuse are you going to use this time the call centre people are extremely rude and do not listen what the customer asking and requesting......