(090042) 97723

This number started 3 days ago, kept calling my iPhone but just a short ring / bust. I answered couple times which only had couple of beeps, I tried to call back the number but the announcement says it's an invalid #. How can I stop this number to call. I click on the link from this web site for Block call but the link goes to Bing or Yahoo and could not get it work?? I'll try again. Also there was one call with 919892533768 called one time, it rang longer and I picked it up, a girl responded 'hello' then hanged up, I wondered they are the same spam people?