Afrihost ******* big busines bully and robo theft

I got a new mtn Sim put it on the afrihost apn as I'm looking for a new data provider. I purchased 1gig for r30. This was st the start of September, I used that gig and tested other providers. End of September an unknown debit for R109 on an account of mine bounced costing me R20 and a bad standing for my credit history and my bank. I then received constant messages from Afrihost that I owe them R109. I did not subscribe purchase or use any afrihost products and I definitely did not give them permission to access my account or use there services. But they continue to harras me for what I can say is closer *****ulent business activities, I've tried communicating but all I receive is the same trash robot response. This is disgusting behaviour. 10 years ago they where great now they a ******* company of dubious upstanding. I will have to warn South Africa of their unscoupolous behavior of this continues.