Terrible from Supersonic

So I've been paying my supersonic account every month without fail and yet they've suspended my fibre line without even notify me. The reason was my Ref. number had a number missing so my payments weren't allocated to my account. They have confirmed that my monies are in their suspense account yet 2 weeks later they still haven't refunded me my monies and open the line. A lady called Vimbai from their finance department is terrible at customer service, doesn't call back and doesn't respond to emails either. Very pathetic, I'm starting to believe that this supersonic is a *****.