UNAUTHORISED DEBIT OF MY ACCOUNT

I have never heard of Digichash until on the 24/04/2015 when I received an sms of a naedo tracked debit order for R99.00. I immediatetly called them the same day to reverse my money since I don't have any business with them. I was told that they will immediately transfer the funds back and my details will automatically be removed from their website. Today is the 30/05/2015 guess what? Another debit went off without any explanation or refunding me my first unathorised debit they took from my account. <br> <br> Please refund my money ASAP and cancel my account details on your database as I have no interest in your business. Reference number dated 24/04/15 is digicash/23 MNS and 30/04/15 272M4 SSMSOL1 both for R99.00.