number keeps calling but leaves no message when tried to call back number in disconected

no message - calls daily at around 10:30 EST

I receive two to three calls a day from 407-880-0000. As soon as I answer the caller hangs up. This number is listed on Switchboard as listed to:
Jamie Andojar  613 Doe Cove PL. Apopka, Fl. 32703
I called 407-880-0000 and received a disconected recording, but the recording stated 407-806-0000 was disconnected. I did not dial 806. Tried this several times and got the same results.

I got a call from this #, my son answered the phone he asked for me personaly. My son told him I wasnt home, he only said his name was Jim then hung up.........no message...no nothing. I tryed to call back and like everyone else said it was diconnected

it called my house asked for me and then there was no answer, but i didn't hear anyone hang up or anything like that. when i called it back i got the same disconnected message but only say the number 407 886 was disconnected and i called 407 880 0000. i don't understand these calls why do they happen?