They sent me a text that makes zero sense, obviously intended to make me curious and elicit a reply. I urge everyone never to reply or answer calls from blocked or unknown numbers...the reason is that if you do answer or reply then they know your number is active and they or other dirtbags like them will continue to harrass you.
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: