This wangiri message is unusual in that it also involves a text message. As should be expected from these scammers the message is rude and threatening. The number that the message, below, was sent from is +994 55 996 31 03:

Do not interact with this number. If you return calls you will be re-directed to a premium rate number which will cost you a fortune. Given the rudeness of the text message it would seem that most would not feel compelled to reply out of politeness.

Delete the message. Block the number. Job done.