Zips Car Wash

I signed up for a membership June 4,2023 and when I signed up I was told that I could cancel my membership at any time. On July 3rd I went to zips.com and canceled my membership. I was charged on July 4th $35 for the membership. I have called and spoke to numerous people with the company but I have not been able to speak to a manager or supervisor about this because they are always on a call or away from their desk. I would like someone to refund my $35 back for a membership that I will not be using