they dont quit!  will not stop calling my cell phone.

For a cell phone, some already have call blocking, if not, there are free apps on the web that will work for some. You can google this. If you have a smart phone, there is a free app called call control. Iphones appear to have apps also. Another one is called Mr. Number.

For text messages: forwarding any text message spam you get to the short code  “7726,” which spells “spam” on most phones, to alert your network operator to the abuse. ATT won't accept 7726 But they will accept BLOCK and return a message that the web site is blocked. forward the texts to 7726 or BLOCK, depending on your phone carrier.

Report your callers here, not just to the DNC alone:

https://www.ftccomplaintassistant.gov/#&panel1-1
https://esupport.fcc.gov/ccmsforms/form1088.action
https://complaints.donotcall.gov/complaint/complaintcheck.aspx?panel=2

By State DNC lists:
http://800notes.com/res/DoNotCall.aspx

Call came in no voicemail. gotten other calls this week that sound a lot like this
713-893-4613

i hate these scum. over the last 5 years i've been called from 80 different spoofed numbers. this HAS to stop. I've blocked every single one of them, but they never ever give up. these people ought to be tied to the ground over a fire ant mound naked and left there.

Calls repeatedly, goes to VM, leaves no message..do not answer calls that I do not recognize number..