Richie,
I am sorry to hear that you have issues. I also purchased from RV Wholesalers. Luckily, I did not have damage, but there will always be work to be done. Thankfully, Heartland is easy to deal with. My experience with RV Wholesalers is similar to yours. They are very responsive trying to make the sale but when you need anything afterwards, they are gone. When I asked about their service network, before the sale, they said they would include a packet with the trailer. After the sale, the story changed to "any Heartland dealer"! Well, I know the dealers around here are terrible. That is why I went with RV Wholesalers.
Long story short, the money saved from buying through them makes it worthwhile to find a little RV repair man. Heartland will work with you on any warranty issue. Just make sure you talk to them first. As for the damage before delivery, I think you may be on your own. I remember seeing some paperwork that said if ANY damage, we needed to refuse delivery and have it sent back. By accepting delivery, they feel the trailer must be perfect!
Good luck. This forum is a wealth of information. USE IT!
Jeff