'07 Tacoma Yamaha TRD clutch

I leased a Tacoma in May of '07, and I've had problems with the A/C compressor which had to be replaced, I've had problems with the master cylinder which had to be replaced also, and now I have 47,000kms on the truck, and the clutch plate and flywheel bonded together, broke apart, and put a hole in the bell housing. Toyota is claiming abuse and they say they are not going to warrenty the vehicle. All my kms are highway driven, and this sequential problem has me wondering if this is a lemon or not. Anybody with any similar problems, could you please reply to this post.