You know, if you were even remotely in the ballpark, this would be of concern. If my customer count went down, i'd be concerned and worried. I track my customer counts, sales and average sale every single day. That's called running a business.
I will never claim 100% of everyone that walks in the door leaves satisfied, that's not in any way or form a reasonable expectation. What I do know is that on a typical day of 400 or 500 customers, my team may deal with one or two people who will either express concern or out right complain. They do their best to address LEGITIMATE concerns, protect the reputation of my store and satisfy the customer with whatever ability they have. That's what I pay them to do. That's what I train them to do.