I had a HORRIBLE experience at Koncept (SB Furniture). I was so disgusted, I waited a week to post about it just to give myself time to cool off.
I found a bedroom set for one of my kids in the brochure, went back to the store - same display as in the brochure. I ordered it, paid a deposit, and it was promptly delivered and assembled the next day. But wait...the steps were missing. So, the installer referred us to the "owner" (who was actually the "salesperson" I spoke with) and, thinking there was surely a simple mistake, I figured she would just send the steps right over. No. The steps would be another THB 4,500. But...the catalog AND the in-store display were identical and each had the same price, how could you think to charge me more, I politely asserted. So, I put the wife on the phone to sort the matter. The owner became VERY belligerent towards my wife to the point that my wife had to scream through the phone for the owner to shut up and listen. Totally not in my wife's congenial nature - so that is saying something right there. Still, my wife tried to politely resolve the matter by asking to see some evidence that the steps were indeed not included in the price - another catalog, a warehouse order book - anything. We would not object to paying the difference after seeing such evidence. I could hear the owner screaming at my wife from 5 meters away and my wife becoming visibly upset and angry (never happens). The call ended with the owner saying she would send her people back to take back the entire set (wardrobe, table, bed) AND keep my THB 8,000 deposit as a penalty for "us" wasting "her" time, then abruptly hung up on my wife. It was now late evening and I was

. The installers returned (nice fellas) reluctantly and I informed them they could take the bed (useless to my son without the steps), but the rest was not going anywhere and I would pay the THB 1,200 to square things for the cost of the desk and wardrobe. They listened, understood our position, and mediated with the owner to simply show us the evidence we requested - no problem.
Next day, the store called my wife and I went down to see the catalog evidence. A young gentleman I'd seen before who speaks clear English greeted me and immediately apologized for the whole incident. In fact, he handled everything from that point very well - explaining to the owner (perhaps she was his wife?) that they were indeed at fault. Without any indication or explanation that the steps were not included, any reasonable person would be led to believe the displayed steps were included in the price for the set. I paid the difference and the steps were delivered and assembled.
A week later, my wife and I are still upset about the treatment we received by the owner. We are still disgusted and decided to take the rest of our business to Index where we have been treated well. When Index screws up something, we never had any problems getting it sorted out promptly and professionally. If it means I have to fork over a 15%-20% premium over Koncept prices for such service, so be it.
It is especially disappointing because we'd ordered quite a bit from Koncept over the years with no problems. We were returning satisfied customers ready to give them the majority of our business to furnish a 4 bedroom/2 living room/1 office home. Knowing this is what happens when there is a problem has put us off from that particular location forever. It is a shame because everyone else there has always been great. The owner still has not contacted my wife to personally apologize for her disgustingly rude behavior or offered any concession whatsoever (throwing in the steps for free or offering them at cost would have been a welcomed gesture - but no - the owner still insists on keeping her margin). IF she were just a salesperson, I would simply go to someone else next time; but as it is, I refuse to put anymore of my money in her pocket.
I still need some built-in work done which I planned to have them do, but it looks like I will be visiting some of the UM sponsor shops instead (should have checked them first, actually). I hope this helps someone make an informed decision in the future.
Cheers!