I often buy certain grocery items in bulk by the case. At the WholeFoods nearest my house, the grocery department will do it, but I quickly learned they would prefer not to. They would take multiple weeks to order it and get it in, then act like it was such a chore to go to the back and get it when I would go pick it up. I quickly figured out the main grocery purchaser was lazy, and the rest of the team reflected the same attitude.
I now drive to the next-closest WholeFoods. When I order it, they get it in in about three days. When I go to pick it up, they go quickly to get it from the back. It is service with a smile.
For many types of services, give your money to a business where the tone is set by those in charge to be all about great customer service. Also, very often the behaviour of the entry-level employees are a direct reflection of the management. If the management is all about excellent customer service, they will not have long-lasting tolerance for an entry-level employee which does not have the same values. If the management is poor, the good employees will not stay in that environment too long before they go look for, and find (because they are good), different jobs.
Of course, there are exceptions to such a dynamic environment before equilibrium is met, but I have found this to generally be more or less true.
If a place does not want your business, you will be better off in the long-term to find this out as soon as possible, and just do yourself a favor and go somewhere else.