Tank Assembly problems of the 2006 Infiniti M35

I was driving my 2006 Infiniti M35x home Sunday night and it began to stall on me while driving. The car wouldnt accelerate and the brakes locked on me. I was on the freeway going about 70mph when this happened. The steering wheel wouldnt turn anymore and I began to panic as another speedy vehicle would potentially rear end me and maybe even kill me. I put my emergency lights on and called for help. My fuel gauge read about a half tank full of gasoline. I had a friend bring me gas to see if that was why this car wouldnt start anymore and unfortuanetly it was the problem. The fuel gauge was not working properly and I could of got myself killed in a big accident that way. Idk what to do! the warranty is not valid anymore and I do not have money to fix this issue. Please help!.