Rain worst customer service experience ever.

I have had the worst experience with Rain since I first joined them. I paid the agreed initial fee of R598 for my subscription with them when I started couple of months back. The following month I was billed double the amount. I couldn't reach Rain in anyway either than sending them an email which didn't serve me well on anyway. I was later called by one of their consultants and they assured me there was an error and therefore I would have to pay for the other month since they had charged me double. To my surprise I got billed double again the month they stated I didnt have to pay. I requested to have my service canceled but to no aveil till this day where they claim I owe them R6589 for a service that has since been suspended because they couldn't get anymore money from my account. Now I'm requesting a cancelation but I'm not getting any assistance.

This was the worst decision I have every made as Rain was well advertised and believed they were the best ISP at the time. Now I have multiple people with the same issue I'm currently having and they all want to cancel. Can anyone please help. We are fed up.