You can tell the owner, but all too often this is just the chicken complaining to the fox who owns the coop...of course if you make it clear you plan to take your business elsewhere, it could make an impact - if enough of his other customers also do it, & if there's another BS (that is, bike shop):-> within convenient driving distance so that such a threat can be made good.

In many cases LBS should be considered to mean Local Bike Skinner.:->