unauthorised debit order

Hi its been some time now that i have been trying to stop Sagepay and webafrica to debit my account ..i have as made many visits to Capitec Branch to reverse the money .. Every month it is the same thing over and over ..just this morning an amount of R365 . I must say stuff at Tableview Branch have been quit helpful in trying to resolve my issue but Sagepay keeps on changing Ref numbers.. I am tired of this little trips to the Bank .. I tried numerous times to call Sagepay to no avail ..this is my last month is the issue is not dealt with i will consider taking my business somewhere else