[Resolved]  Unknown — Unknown and silent phone calls

From yesterday night I am getting phone calls from this unknown number (+[protected]. I didn't receive it first but again today I get unknown phone call from that number and I receive it but no one answering, I say "hello" but it is silent, no speaking, no answering every times ...I do call back and after receiving the call by the number, it is also silent... I'm getting unwanted phone call from the number +[protected]. I have marked this number in truecaller as spam and have blocked this number... please do something.