I had similar issues with DB. I was a BM for my best friend. I went in with her to pick out the BM dresses and the dress chosen fit me just fine. We got it in and I tried it on again and the top part was just a bit big (I lost maybe 5 lbs). The girl insisted on altering it, she took measurements and my friend said I should let her. I insisted that it wasn't a big deal that I could eat a whopper and milkshake and put the weight back on. For a 5 minute argument with the seamstress, they started saying that I signed a paper (??) saying they could alter it, but never showed it me and couldn't produce such a critter when I demanded to see it! They tried to tack $150 on it my bill for alterations that were never done (said they shortened it - i'm 5'8" - I never need crap shortened!)!! I threw a fit in the store, got the manager involved, they asked me to leave (same - never swore at anyone!), I refused to leave without the dress (they ran my credit card), they called the cops, and I filed a police report for theft in front of the manager. She removed the charges and threw the dress at me.
So this was about 5 years ago. I didn't even consider buying my dress from them. I bought my dress from Jessica McClintock. Well I need a cheap TTD so I decided to pop in. The woman at the front desk was beyond obnoxious. I could spend an hour just gripping about her and the way she dealt with customers. It took her 25 minutes to find the dress on the computer for a bridesmaid - who had the style number and color on a piece of paper - and there wasn't an issue with the computer.
The girl who helped me with the dresses was fabulous. I actually told her she needs to find a bridal boutique to work at instead of the "wal-mart" of bridal gowns.
The manager stopped by when I was wearing the dress that I decided I liked and she was actually pushing the sample dress on it - it's lace and beaded - the beads are falling off as I'm wearing it, and part of the lace was torn under the arm. I asked how much, I can easily fix it on my own for a decent price. $49.99 off. I said no thanks, i'd rather pay $50 more and get a perfect one. Her response "Well, none of them come in perfect so you'd be better off with this one anyway" I used to work in retail - you never, ever, ever, EVER talk bad about your products!!!
So, after that, I have the style number and everything so I'm going to try to find it online/used for less - I LOVE the dress otherwise I wouldn't bother with anything from them