I get calls from various 651-346-xxxx numbers every single day.  I've called back and they claim to be Verizon Wireless calling regarding a payment.  I have had Verizon for several years and they have never called me about a payment because they are always paid in full and on time.  When I called VZW Customer Service, they say that these are NOT their reps and are likely a scam.  Other numbers include 651-346-3107, 651-346-3145, 651-346-3400.