Clutch problems of the 2004 Mazda MAZDA3

2004 Mazda 3, brought brand new from dealer. Had rear brake problems, was fixed due to bad equipment/metal used for rotors or that was what I was told. Warranty covered. Now I am at just under 50,000 miles and my clutch needs replaced, cause they said I burned it up. Not covered by warranty. I told them over a year ago, that it whined/screeched when shifting from 1st to 2nd gear, but only when it was cold. Told they couldn't find anything wrong, just warm the vehicle up first. Now a smell something burning and they keep saying it was my fault. I'm the only one that drives it, going back and forth to work and dropping my kids off at school. Very frustrated, because I was told its going to cost over $1,000 to fix. . . . . .

1. Clutch really hard when pushed. (sat in other Mazda 3's and clutch was extremly soft) *dealer insisted that I burned it and wants to charge me $800 for labor. Went to a couple of people and they didn't think it was burned. Going to the dealer again. 2. Noise in the rear when I have people in the back. Makes scraping noise! going to the dealer to complain. 3. When accelerating on a turn, the front of the car makes a boom booom boom boom noise, really loud. Went to a couple of friends working in shops and said it's my struts. Going to the dealer to complain! 4. Had to change two front window regulators. 5. 3rd gear making noise when trying to engage into it. Going to the dealer to complain. 6. Back brake rotors giving a lot of dust then the front rotors. Not suppose to be like that!going to the dealer to complain! 7. Exhaust loose, when stepping on gas it jags back and forth. Goin to complain in other words not satisfied with car, espeasially since it's brand new. . My car just reached 17000 miles, but all the problems happened earlier.