Looked up the number they are indian reverse callees … guessing they are doing the same as i do in firertc when i spoof my number but these guys are sending out dvla notices saying its expired final notice before action with a link to dvla (dot) gov site … dodgey
Kept ringing them from my phone (made my number private) kept ringing they kept putting the phone down just kept ringing 
enjoy … anyome get a answer comment below i wannah know what they crack is with these guys!
Enjoy