Debit order amount double.

I got a debit order of R190 and when I queried it I was told its for January month which did not go through, I have a statement which shows that January did go through and if in January it did not go through why wasn't I contacted or why didn't I get an sms to say it did not go through, I just get a double deduction just like that, this is actually making me angry how many people are they doing this to and they did not notice???? ******* im going to reverse it today and ill use another tracking company.