Can't fill up my gas tank ???
 

I just got my car back from the body shop about three days ago. I don’t really know if they replace the gas tank or anything, but now when I fill up my tank the pump don’t fill up by itself anymore. I stop fueling like the tank is full but it not. It wasn’t even at $10 bucks yet and I have to keep on pressing and clicking the nozzle until it get full which really took at long time. Does anyone know how to fix this or should I take it back to the repair shop.
it an lexus rx 1999
thanks