Gasoline Engine problems of the 1999 Oldsmobile Alero

On three occasions I have driven my car to my destination and when I go to get back in the car it won't start. It have left me stranded each time and a tow truck was called. The dates this happened was 8/22/99, 9/14/99-9/17/99 & 9/22/99-current. The dealership still has my car to this date. They admit that there is a defect which they thought was the fuel pressure regulator because they've had this problem in other Alero's, but apparantly that wasn't it. I forgot to add that after the car sits for awhile, it starts back up, so the it won't duplicate itself at the dealership. You never know when this will happen, but I have noticed that it has occurred within 24 hours after filling the tank up with fuel and I told them this because I thought it may have something to do with it not starting up or something in the fuel line was defective. I personally think that the car needs to be recalled. I've only had the car for 5 months and its been in the shop twice. The first time it happened it was on a weekend and the dealership was closed. So far my car has been in the shop cumulative 15 days. I think this is a safety issue because it has left me and my son stranded and I don't know if this has happened to anyone else, but I feel that the consumers need to know this. This is my only means of transportation and I do not feel comfortable in that car any longer and am not taking it back. We have yet to work out a resolution to this problem. Please contact the dealership and the manufacturer (general motors) to investigate this problem. This could result in a much more serious problem if the defects aren't detected. I spoke with brent walls, gm factory representative @ 1-800-823-0055 x8174. I have also filed a complaint with Oldsmobile 1-800-442-6537 file #990072405 and with the attorney general's office and bbb autoline. Please contact me with any suggestions or to discuss this claim. I appreciate any help you can give me.