2004 Nissan Murano door painted now 3 of 4 door locks are n

had a scratch on my driver door - took to professional auto body shop who removed the door handle and mirror to paint the door--- picked up car and now door locks work at random will and power mirrors do not work at all. Took to dealership who has been running tests for 3 days and cannot find figure out why. Over $400 into diagnostics and no answers -- what are possible causes of this? They have tested fuses, grounds, shorts - no luck. now think 3 accuators all went out at the same time not related to the painting. what are the odds of that! Please give some thoughts on what is going on here...