I recently got my trucks oil/tires done...at the gas pump the pump clicks off.

What is your question?

Right now my truck shows less than half a tank filled. I went to 2 different chevron stations and the pumps at both stations clicked off prematurely at 1-2 gallons filled. When I got my trucks oil done they put a fuel cleaner in. could that have caused this to happen or are chevrons pumps the issue?