Lies about contacting me to close a WiFi account which they are still charging me.

I've recently complained about Cell C on this forum about a WiFi contract which they're still charging me for while I have terminated it in Feb 2017 when I left the country. I received correspondence on this website advising me that I would be assisted. Moses Mo***eng, a social media consultant, contacted me via email to enquire about my contact details. I've mailed him three times regarding my cellphone number in Canada and times to call me. Moses never responded to nor acknowledged my emails. Three days later he mailed me that he has tried to contact me and because he could not, the case is closed. I then responded via email but again no reply. I have no record of a call from South Africa on my cellphone and I think he didn't called me at all.

Cell C has erroneously billed me R99 for 12 months and have not assisted me to rectify this problem.