Cavallaro-Neubauer Chevrolet- Buick

I bought a truck through Cavallaro Neubauer in Wolott. They never fixed a few problems, but they are vital. 3 outta 4 tires need replacing, brakes are bad, from sitting so long, waiting to be sold. Speakers need replacing. I am a single mom and they took advantage of me. And they say everything is fine. I am not asking too much, why won't they fix it. I went to Friendly Ford told the tires all need replacing, told me also about the brakes and it needs work asap or my daughter and my elderly father are not safe.