front end wheel bearings

What is your question?

I just had wheel bearings replaced by the dealership and I still have a load groaning noise and a wobbly steering wheel at 55 miles per hour. The car has 235,000 miles. At 135,000 I has the same problem and the tech found there were three bearings on each wheel. I cant find that paperwork but this dealership only replaced two bearings per wheel. Does anyone know if there are three bearings per wheel and how do I find this out? Thanks in advance for helping me. Tom