Who called from 5082221644

They have called me 3 times in the last 5 days. They hang up when my answering machine answers.

received call & hang up on answering machine, called back automated message references fundraising center but does not identify entity nor what type of fubdraising being conducted

i had several hang ups when answering machine picked up

calls everyday 3 times a day and hangs up or if machine picks up never leaves a message

they asked for a roommate who was unavailable at the time, when I asked who it was they said soemthing about a courtesy call..