Bring it up here and i'll walk you through it.

You might need the emergency brake service tool to get that caliper off. If not it's an easy job to replace the caliper.
OR cheap way....

Myself i'd prefer one replaces something that you or a loved ones life depends on.

The mech/tech/wrench gave you that answer for liability , ins reasons. Wouldn't be the first person to say. WELL YOUR REPAIR GUY SAID I COULD DO IT.

A caliper runs $25 - 100+ per from the same autooriellynapaknowhow store the repair places gets them. A dealer gets CERTIFIED FORDGMCMOPAR parts from their warehouse, which buys them from the same place everyone else does, in mexico or parts east.

If you don't have anyone down your way to help, drive up here i'll walk you through it. In the semi heated garage.