They have called me a lot of times, but to be fair, I just got this phone number about a month ago. It is a school loan company. Easy fix is to answer or return their call and let them know they have the wrong person, if the call really isn't for you. Woman I spoke to was nice about it!
Even if you have loans or not calling from 50 different numbers is annoying. They call from this number as well 607-235-5092 which comes up as Floyd L Marks, then they call from 267-388-1837 which comes up as Alice F McClain. It really needs to stop!
They must not have received a copy of your promissory note showing you paid to off. Maybe get their fax #, and fax a copy to them. Congrats on paying your loans off, by the way! That's quite an accomplishment!