Wheel Bearing CLUNKING ???

If they took one side down and inspected they shut one eye. A wheel bearing will normally be noisey when under load which in your case would be turning left.
I personally do not play guessing games with wheel bearings. Dianosis is a coin toss at best. One bearing hasn't been any farther than another. On your car thats 4 bearings. On a front wheel drive its only 2 bearings or bearing hub assemblies that cost a whole heck of a lot more to replace.
After you replace all 4 bearings, Use a diagonal plier to cut the cages. You'll find the scaring on the inner race that could not be seen before.
One more thing.... The area between the inner and outer bearing serves as a grease resivoir for both. That grease is now contaminated. Flush the entire hub out good. Packing the bearings themselves is crucial, along with half filled resivoir .