Fuel Injector problems of the 1998 Oldsmobile Cutlass

The fuel injectors in my car has given me problems since 12/14/01, 1/28/02 then again 3/28/02. The mileage between 12/14/01 & 1/28/02 was less than 2,000 miles & the next time was less than 2,000 miles. The first time is cost $179. 00 and the second time $175. 00. The third time $25. 00 & I called the customer service representative & bascially he told me I was using bad gas or poor quality of gas. The only gas I get is from shell, exxon or texaco. The customer service rep. Has not help in the problem in anyway. My mechanic said the injectors need to be replaced & that would cost $1500. 00 or more. The merchanic got a service bullectin #99-06-04-005a about the problems they are having clogged fuel injectors causing the car to run poorly with not enough fuel getting to the engine, & causing the check engine light to come on. He also said he has a lot of these engines with this same problem with the fuel injectors. I just want Oldsmobile recall this & have it fixed.