This number calls several times, leaves no message and can not find anything on the net who it belongs to

This number belongs to some Nationwide collection place... they call me 3-4 times a day and has left me messages on mine and my husband's vm talking about being sent to court which is crap.  I told them to mail me a bill because I have never seen a bill from them... this is considered harrassement and they can be sued.

This company keeps on call my phone, 3-5 times a day...and I have not received any collection letter from them.  "Nationwide collections"