How do we get a hold of the owners??? They charged me twice - almost 40$ for under 5 min???

I spent $15 and the equipment wasn't working properly. my car is dirtier than how it came in

Bought 7 x $1 tokens (machines don't dispense quarters). The machine ate my first two tokens, then left with the remaining tokens, trying to sell them to patrons and having to warn them about the jamm