Unauthorised Debit - complete negligence

When going through my bank statement I noticed a debit of R99 by Digiscash for a company called Primax Communication. I received some contact details from Digicash but my calls were never answered/ some numbers never existed. I had to make quite a noise before Digicash contacted Primax Communications on my behalf and requested the mandate. They were given 5 days to send through the mandate, after the 6th day I had to escalate my complaint to Digicash management and I was finally sent the voice recording of the phone call mandate. The person in the call with the telemarketer was definitely not me, nor did he pretend to be me. The telemarketer had all of the callers details, but the person on the phone was not sure of his bank account number, which he stated during the call. He managed to give them my account number and clearly there was no verification and I was left with the problem of having the debit order removed. It was a horrible experience and it just shows you how easily you can fall prey to these telemarketing companies. No checks were done to verify accounts and Digicash operates on a 'good faith' basis with these companies - so they don't do any checks themselves.