Bad billing, blocked simcard, summins

I have searched and continue to search for an email address to contact Telkom on. I am currently out of South Africa and unable to reach Telkom. You buy international minutes you are left on hold for more than 30 minutes at a time then having your call dropped. Due to unemployement I was unable to make payment. Which was a billing for two months. Prior to this I was paying my account, with invoice stating a different amount being carried forward from where I have no idea. My sim card is still inactive, even abroad connected to wifi it would be able to receive calls through wifi calling. I have made the payement that I was sent a summons for but I do not understand how is it my sim is still locked a bill of 2k increased to 8k from carried forward balance that I have no idea comes from where. My contract was paid up and I was up to date with my account. Then next thing they will cancel my sim card as they once did in the passed which then resulted in me doing a run around for something that I did not request. They are quick to send smses stating that you have been summoned but incapable of answering to how my bill just sky rocketed with carried over bills.