I'd suggest writing a letter of discontent. You can Google templates but basically you write a physical letter about why you are displeased with their service. Yelp reviews do nothing to solve the problem--it just makes other shoppers aware but not all businesses look at yelp and if you just complain on Yelp, it won't make much of an impact and it doesnt make you look good either. A physical letter stands out and businesses are more likely to read and respond to it.

Heres what you include....

1. Thank them for their business. You are a loyal customer and enjoy shopping there.
2. However, there are concerns you have that you would like to see improved.
3. Example with date, time, and name of employee if known and how that made you feel
4. Example
5. Example
6. Overall, you love shopping there and would love to continue shopping there if you felt more comfortable shopping in a respectful environment
5. Thank you for their business and thank them for their time.
6. Sincerely, your name

Tip: Be kind and courteous in your letter. Keep it professional and avoid negativity or overly emotional word choice/accusations

Best of luck