if they really wanted your business they would've tried to sell you on one of their bikes, or charged you for the fitting, or tried to order the bike for you, or offer to order the bike and fit you, every bike shop i ever go into tries to nickle and dime me until i get to know the employees
the 2 bike shops closest to me lost me as a customer as well, one has little to no knowledge in fixed gear bikes (with the exception of 1 mechanic) and one of the employees even told me he wouldnt trust any of the other employees to work on his own bike so I shouldnt either (he meant the ones that were on the floor, and the mechanic had already left i guess? idk) and he was too look at it
the second shop told me they wouldn't put my bike on a rack to work on because it doesnt have a brake and that's illegal, id never been told that, and until it becomes the norm i wont return there
I offered to pay at both shops
I'll just buy the tools i need and do it myself
you should do the same, just buy some tape measure and click around online