spamming my friend with pornographic texts. Knows my and there town and address. is working with another number at "trolling" people

Received a call and called back but went to music playing and said to please hold for the next representative and after 5 mins of holding it said good bye and disconnected the call....

I get calls on my cell phone at least once a day.. Who is it?

I get calls from this .no.  But they do not answer..

4 or 5 missed calls in 2 days