Blue Security ***** from account holders acounts

I requested a technician from Blue Security to fix my faulty alarm system in my home. They sent someone the next day and he assessed the problem and gave me an invoice of R365 for the call out. A few days later I paid the bill via EFT - on the 22nd of October 2015. This morning (2nd November 2015) I received an sms on my phone informing me that Blue security had deducted the amount for the call out in addition to my monthly service fee via a standing debit order on my bank account. As I understand, this is ******* as I never agreed that they could do this. It therefore constitutes theft and I will duly file a charge of theft against them with the SAPS. This is the second time this year that they have done this to me and after I complained the first time they apologized and reversed the charge but I warned them at the time that it was ******* and if it was to happen again they would bear the consequences.