The switch could be failing and when the shop repaired the passenger door, they could have been testing the operations and the switch might have broken down during this time.
You can't put the blame squarely on the shop but should it be the case, at least the shop should have informed you.
Another possibility is the switch was on its last gasp when the shop finished it work and when you tried to operate it, it just failed to work.
Such circumstances do happen and we at shops are always at a disadvantage.
I had an instance when a car was driven into my shop, raised on the hoist to some visual checks underneath with engine not running.
When vehicle was lowered, it started but transmission had failed. The torque converter had some stripped its internal gears splines, this was due to wear over age and usage and it just decided to retire at this particular time and circumstances.
Lucky thing this vehicle belonged to one of my employees, if not I would have a lot of explanation to do.
Such problems are not easy to prove and there is the benefit of doubt. You are sure the switch was working but the shop can always argue that the switch was already faulty when vehicle was brought in.
The problem is not due to shorting of switch, if it is, it would not work for the passenger side as well. It should be caused by the contacts inside the driver side switch and this should be due to wear over time. If you try flicking the switch lightly a few times. It might just decide to work.
Monday, March 11th, 2019 AT 5:12 PM