Telkom incorrect invoices and overcharge

I am writing this review to complain about Telkom services, they keep sending me incorrect invoices every time charging absurd amounts of money that i didnt even agree with and its not in the contract. I signed for two phones which cost R255 per month each, and now they are sending me an invoice for over R2000 +, I complanied and sent couple of emails, and now as I am trying to log onto the website its says it is not available and i don't even have a place on their website to file a complaint. I cannot use my line, because nobody helped me to sort it out , and they keep sending me higher invoices in order to keep the line active. Is there anyway I can get help from Telkom, I feel this is very unfair and digusting customer service on their behalf. My number is ***, I hope to sort this issue quickly!