unauthorized debit order

<p>I have a problem with the company called SABIFLASH they have been deducting R99.99 on my account unauthorized on the 15 of every month. I contacted them they couldn't tell me what was it for but they promised to stop. But instead they changed reference number and debit date now they are deducting on the 03rd of each month. and their contact numbers are no longer working</p>