Fabric and seam thread very weak - fell apart quickly

I have ordered these pants on and off for the past several years. At first, they were great, and held up well, though usually starting falling apart after about 6 - 8 months. Note - before commenting on the quality of the product, I want to stipulate that I followed the manufacturers washing instructions to the letter!At first I thought that being silk they were just more fragile than regular material. They ARE extremely comfortable. However, I started to notice that they were always coming apart at the seams, and the fabric would unravel making a sewing repair very difficult, if not impossible.I decided to give them one more try, as they're really very soft and comfortable. I ordered two more pair, and they began to fall apart even more rapidly than before (only lasted about six - eight weeks). Note - they always seem to last just long enough to preclude being able to return them for a refund.My advice - they cost nearly $70 bucks a pair now, and they aren't worth $7. If you reall must have black, remember you were warned.If you like other colors, you can find other brands which hold up VERY well.I have a steel grey pair I bought from Wintersilks two years ago, for less money, and they are still in good shape. I wear/wore the Wintersilks pairs just as frequently as this crap.