sounded like a fax tone.

On March 30th, repeated calls received on my cell phone in Canada. I hear a fax tone when I answer. Also received repeated calls from 847-645-9511, 847-645-9344, 847-645-9247, 847-645-9249 on same day. The numbers seem coming from same company.

Calls come from this number and 3 others that are similiar. Two o'clock, 3, 5 in the morning, noon ,early evening. They originate from somewhere in Illinois, but that is all I can trace it to. When I try to call back 30 seconds later they say the number is disconnected.