Help needed: Urgent (life-saving) medications and driver skipped house?

Hi all,

Long story short: my grandmother was waiting for a medication yesterday when she got a notification that FedEx "missed" her. She was home all day watching for the truck and even went outside to look for it. She did not have a note on her door.

Normally, it is what it is, but she has a terrible lung infection that requires treatment before she can get chemo for breast cancer....and the clock is ticking. It's already so close we're not sure she's going to be able to get chemo at all.

We can't get a hold of a real person on the phone, and the online information basically says to wait it out or asks for her tracking number, which she does not have or can't find. Unfortunately, I can't help her look because I don't live nearby.

What can I do to help? Is there a number to call? A trick to get through to a human?

Please please provide some guidance if you can. I really appreciate it!