Hey, welcome to the forum! I hope that some of the answers you got to your first post don't scare you off. You ask a valid question and in reality, many RV dealerships don't have good customer relation skills. That does chap my hide a bit too because I was in marketing for most of my career. If my earnings were dependent upon returning calls, you bet I'd be chasing every lead I got. I'd also probably be their top salesperson month after month. Too many sales folks in the industry are lazy and only chase the low hanging fruit. Search around, find the RV you want, and then go look it over. Don't let your perfect rig slip through your fingers because the dealership was too lazy to sell it to you.
If you are looking at used rigs, I think (my opinion) that you'd do much better with a private sale directly with the owner.