Any shop at one time or another can be a crappy experience. Depends on the day. Through 40+ years of long island shops, I have found Coliseum can be a tad unfriendly at times. I do find them overpriced on most every firearm I have looked to buy throughout the years.
Others swear by them. They are definitely not my shop of choice. Different strokes.
I should have saved my comment for this post, but it's worth repeating: No one has ever had a bad experience at Campsite.
If (astoundingly) your experience there is crappy, they didn't realize and you didn't tell them. With their spotless reputation, I'm sure they would go to great lengths to accommodate an unhappy customer.