Unless the dealer took a sledgehammer to the bearings while working on the shocks they would have to have already been worn out to have been affected. Wheel bearings carry the weight of the vehicle and are subject to road shocks. It would take a lot to ruin a good one.

You really shouldn't be taking a 10-11 year-old truck to the dealer for out-of-warranty service anyway, excepting recalls. That's the most expensive option and dealers do not necessarily have the best mechanics.

There's really not that much involved with replacing shocks. The rear end has leaf springs and separate shocks. You could've probably pulled them out with the truck still on the ground. All it takes is a couple bolts. If you live in a rust-prone area, getting rid of rust is more of an annoyance than replacing the actual shocks. 

Depending on what you have in the front suspension, shocks and "struts" may be separate from one another. My 1999 Ranger is a 4×4 with a torsion bar-based front suspension. It has the off-road package and is a lot more ruggedly made vs. regular 4×2 Rangers of that era. All I did was jack up the truck so one torsion bar was completely free of the ground, and replaced the shock. Three bolts and I was done. It took a lot more effort getting rid of rust than replacing the shocks. 

Next time, go somewhere else besides the dealer, though. They charge maximum rates to cover their tremendous overhead and ripping off customers is their forte when your car is out of warranty. 

Find an independent mechanic to perform the work if you can't do it yourself. Ask around, if you don't know any off hand. 

Posted by: @blindsey269

↑

Could they have damaged the wheel bearings when replacing the shocks and struts

no.

It takes hundreds of thousands of miles of wear to damage hardened steel wheel bearings