2003 Dodge Durango WEIRD PROBLEM

Had tune up, injectors and throttle body cleaned,
ac oil and charge, oil change, brake pads changed.
Picked up truck and door locks not working, mech.
checked all fuses, and then reset computer, locks
became functional. Next morn leaving for work,
headlights, inside lights, & door locks all were not
working. Security led displayed continuously lit.
Reset computer that afternoon again, everything
working, but while driving alarm sounf for like if
your low fuel or washer fluid kept sounding.
Next morn same problem is there again.
????????????