Incorrect billing and very poor service

Firstly they debit the incorrect amount from my account and then when you try to contact them no-one answers, not the branches nor the call centres, after 2 day when I finally reached someone they are not interested to assist you and transfer you from one to another, when I reached accounts they wanted me to contact another number with no answer again. I dont know if it is just me but is seems like telkom employees has a lack of knowledge, then finally when I decided to just cancel the contracts once again no one can assist me and as previously the branches in the East rand fails to answer their telephones. So annoying....