If I tap the phone number it opens in another page on my android at the top it says more... I hit that and it give me the option of blocking the numerous from calling or texting.
I hope that helps you. If not do a Google search for you phone and how to block calls. Or go to where you got the phone they should be able to tell you.
Received a call from this number on my cell. I answered. Caller gave me his name and some other info then said "can you hear me OK" - I immediately hung up instead of saying "Yes" as I hear that is a way spammers get you ........