Attendant attempted to **** me

I went to the garage to fill up my tank. When it came to paying, the attendant swiped my card but it did not ask for my pin. I was sceptical as to how could my pmt go through without inputting my pin. The attendant joked and said he had my pin. Nevertheless I called my bank and as per their system, the attendant indeed viewed my pin and they had to cancel my card. Luckily I called my bank or I could have been a victim to a ****. I doubt this is allowed for your petrol attendant to view customers pins and we can only wonder what they will do with it considering all the ****s out there. Nevertheless this is my 2nd incident with Engen and I will never feel safe to come back. I am better off at your competitors.