Manual Transmission problems of the 1999 Mercury Mystique

The transmission in my 1999 Mercury Mystique hass been slipping for 2 years and it finally went out. When I went to have it repaired, I had 2 repair shops tell me they could sell me a new or rebuilt transmission, but they would see me again in a year because of the problems with this car and transmissions. I can't find a recall that's been issued. How can a new car have such poor problems with it's transmission and lincloln Mercury not do anything about it? I've tried for two years and no help.