Who called from 6099205410

Called my house, didn't say anything when my wife answered.

Caller said nothing but stayed on phone for 10 seconds and then hung up

Same as well, we have gotten calls from this number four days in a row!  Nobody is there when we say Hello

Had to wait for caller to respond to my numerous hellos - asking if we needed lawncare services. Said no thanks and hung up.

Hung up when answering machine picked up.