I want to start this out with I use the free vacuums here on a regular basis and anyone I've ever talked to has been incredibly polite and nice.
Six months ago a young man asked me if I wanted a month of free car washes for 6$ I was stoked but asked what's the catch and he said nothing and I believed him. It's entirely my fault that I was fooled for so long a time I should have noticed and stopped the reoccurring payments earlier but he never should have tricked me like that. It is not best practice to get customers.