Shocking service

I cancelled my rain contract after 2 weeks due to connection inconsistencies, in Apil the Rain consultant told me due to the signal error on the device they would collect the unit and refund me as soon as South Africa entered level 3.... since then I cant get hold of anyone at Rain (and I have tried more than a dozen times to get a hold of them), All they send is referance numbers but no one gets back to you. On top of that they debited me in April, May and June after cancelling.... sending me an email this week that i would be debited again for July. I have had to cancel my credit card to avoid being debited again.