Like what Rob50lx said, stay away from a shop that would sell you a front track bar relocation bracket for a 2.5" lift without the accompanying draglink flip. That will actually CAUSE bumpsteer.
Likely you didn't actually have bumpsteer until they did that.
Bumpsteer is when suspension travel up and down causes steering inputs left and right. It happens when the trackbar and draglink are not parallel. The moment you install a raised trackbar bracket without installing something to match the new angle of the trackbar for the draglink you will have bumpsteer.
Odds are the original issue was a cheap lift that didn't include caster correction. Caster is reduced when you lift, and not enough caster causes instability. Caster is what makes the Jeep want to drive straight. Not enough caster will result in a Jeep that doesn't want to drive straight and hitting bumps will easily veer it off course.
Caster is easy to correct. You can use longer lower front control arms, adjustable lower front control arms, or geometry brackets. I would recommend geometry brackets, especially if the primary focus is on making it drive well. Geometry brackets will correct caster and the correct the control arm angle which allows the front suspension to work better and do its job of absorbing bumps better.
Rancho make a great set of geometry brackets. But other brands like JKS, MetalClaok, and AEV are options. But the Rancho brackets are one piece (which makes installation easier) and stout.
I would have the shop remove that raised trackbar bracket (or remove it yourself), and if you don't already have something to correct caster I would add caster correction. The aftermarket trackbar won't hurt, but a raised front trackbar bar bracket will.
You may want to find a shop that knows what they are doing.