03 pontiac questions

I bought my pontiac last august and noticed problems after problems with it. first my blinkers keept on going out (2) i had a leak in my trunk and in my lights. next my defrosters stopped working. and know since they have fixed it my car can not have the heat on and it blows out really hot air. i mean hot like if u put ur hand near it ur hand will burn. is something wrong with me car? evertime i bring it to be fixed it seams like something else is wrong with it when i take it back home. any ideas would be great thanks :disappoin

I'm not quite understanding what your problem is, can you clarify what's wrong