Three consecutive calls.  Each call is two minutes apart.  The 1st and 2nd calls ring 4 times each and the third call rings 6 times.  I now get two different numbers calling with this pattern each day.   The 517 area code are the only numbers that are always the same.  Most of the numbers are 517-295 with the last 4 digits different with each call.  Other numbers start with 517-258 and 517-295.  The last 4 digits are always different.  These are SCAM/SPAM/FRAUD calls.  They don't stop.  It's a daily thing...except weekends.  Apparently the SCAMMERS like their weekends off