Enjoyment of payment of social security contributions

I got on a bus and paid for the ride, and then during the ride, dirty water (probably from sewage or something) started dripping from the ceiling of the bus in large quantities, which stained my clothes and caused a bad smell and discomfort. There was no real damage that I had to pay to make up for the shortfall or anything, but there was definitely discomfort. If I had known this was the case on the bus, I would not have gotten on the bus and certainly not paid for the ride (although I did enjoy it in the sense that the bus brought me to where I wanted to go).
Can I do my own thing and decide not to pay on my next trip with the same bus company?