Corsica doors won't close

I have a 1996 Chevy Corsica. About 3 weeks ago I had the power locks switched (because the driver’s side didn’t work and the pass. side did). I don’t know if that is the cause of my newwest problem- I tried closing the driver’s side door when I got in and it would not latch closed. Then I opened the pass. side and it did the same thing! Now both of the doors will not close. What can I do???

You had them switched?

Have it towed back to the shop. This time, instead of telling them what to do let them troubleshoot the problem.