*****ulent debits from Uber

I have no idea why Uber keeps trying and sometimes succeeding to debit R50 from whatever card I recently used to book rides,I used to use a particular bank and this happened about 3 times,I have since changed banks and set last night at about 23h40, I received a notification on my phone saying that there was a declined R50 from Uber? What BS is this,I was in bed, secondly,there is no Uber in the town where I live so you can't even claim it was me. This is ***** and I want to get an answer. Also,am I the only one?