Vodacom Accounts - worst client service

It has been 14 months trying to sort out my account with Vodacom to no avail. In June 2019, Vodacom claims they have not received my payment, yet, it went off my banking account and shows on my bank statement. Vodacom then raised triple the amount end of July and an additional R100.88 bank charges. I stopped the payment at the bank. I phoned, get cut off, phoned again, being told I am registered as a corporate account (two cellphones for my two teenagers - not corporate at all), wrong department, get cut off... I have phoned more than 50 times the past year. It took me a year to get an e-mail address where I can send my proof of payments to, again to no avail. Vodacom is very quick to blacklist and put us forward as bad paying customers, but what should I do for them to rectify my account? I am dealing with cancer and treatment, but dealing with Vodacom is so much more frustrating.