Slight correction on listed numbers that have left unrequested messages: They have also called from numbers 313-338-1067, 313-545-0219, 313-545-0228, 313-545-0017, 313-545-0139, 313-383-1298, and also 480-305-9355. Had not requested any info or contact from them, and they are not a business partner. May also be related to 866-269-9419 and 888-963-9813 (both "unavailable") that have also been calling regularly in the past week and a half.