AC worked when I pulled in for a oil change and did not work when I left.

So I have a 2012 Ford Fusion SEL 108,xxx miles and yesterday I got an oil
change and air filter replacement. I noticed by the time I got back to my job,
less than five minutes away, that my AC stopped working. I tried turning it
on high, medium, and low tried turning on the heat no response, almost like
the motor just died.
could the oil change place had knocked something out of place? Could it
be a blown fuse? or could it be the motor?

I am not saying that the oil change or air filter change is the cause for the
AC to go out. I am asking could something had been jarred loose or
something damaged during the process. I understand mistakes happen.
The AC was working just fine when I pulled into the Oil place and was not
working when I left. Hence the speculation that something must had
happened during the oil change to cause it.

Thoughts?