Front Air Bag problems of the 1999 Hyundai Tiburon

I was driving in a parking lot that I drive in daily. I was making a routine turn, and when I began to slow down from 30mph I got to about 20mph and then the brakes locked up as well as the steering wheel. I did not slam on the brakes so they should not have locked. After the car went up on a curb, several seconds later the airbags deployed. They did not depoly on impact. . When I bought the car I was told I had anti lock brakes and now I am told I don't have them and that in itself is a problem with the dealership. The breaks locked up once before and I brought it to Hyundai, I did not have an accident just a scare, and they basically told me it was in my head. The car is unsafe and I am scared of the breaks getting me into a more serious accident. The 4,376 was all from the one accident with the brakes and the airbags.