you got a couple things going on here.
1) yes you (or your store manager/owner) should sit down and have lunch with the RBM from your local corporate store (they can expense it so you get a free lunch). It is very important for dealers to have a good relationship with corporate.
2) a lot of times the reps at corp think they know more than you since they work for cricket. those guys suck.
3) customers LIE! I've had customers tell me they did an insurance claim at my store before. I was like "um... no". Sometimes it's a misunderstanding from them being a layperson, sometimes they are trying to get ahead, most likely they don't want to wait in line at the corp store (if yours are anything like mine the wait between the 30th and the 3rd is multiple hours). I've also had people tell me there friend flashed a cingular phone, or a t-mobile phone to cricket before, and i just say... not possible. anyone that told you that was mistaken.
4) remeraber that all the crap gets funnelled to the corp store flagged esn's, many billing issues, technical support, warranty and insurance claims. can you ever think of a time when one pissed off or rude customer ruined your day? multiply that by 100 and you are now in the state of mind of someone that works at corp. they are often so jaded by having to deal with the (insert expletive here)s that it comes through as them being rude to people.
so hold your judgement on the guys over there, believe me their work environment is tough. and get to know them so you guys can scratch each other's backs. i am litterally one block from a corporate store and they send me ton's of business (flash phones, new phone sales when they are out of stock), so every once and a while i'll buy 'em a few pizza's for lunch, or flash a phone for them no charge or whatever.