Amen to that. Ryan Theewen ("ratcues" here on AZB) in their cue repair department does absolutely INCREDIBLE work. I recently had him rebuild and recondition a Meucci model 97-11 (a cue that has more sentimental value than actual value), and I was stupefied at the result. The cue was banged-up and badly warped in the handle area (yes, the butt itself was warped). Needless to say, after Ryan did his magic and sent it back to me, the cue *now* looks and plays like brand-new. I will be taking some pictures of it and creating a separate thread on it in a few days, because I want people to know just what can be done with an old warped cue. And the customer service could not be better -- he stayed in touch with me the whole time, giving me progress updates, etc.
I've done business with Muellers over the past decade, and they've been fantastic every time. To be honest, I've also done business with the other top billiard supply companies (e.g. Seyberts, Ozone, Atlas, Border, et al.) and they've also had great service. It just goes to show that when you get to *this* size of company, you're doing business with a company that's been in business for a long time, and have built a reputation. Otherwise they wouldn't be in business, or wouldn't be that size. I would say don't let a one-off bad transaction spoil the soup.
-Sean