Unknown Number — I am complaining about harassment by unknown number

Address:

1045, vishnunagar society, chandkheda., Ahmedabad, Gujarat, 382424

My number is [protected]. I am facing trouble by one unknown number which is [protected]. He or she daily calls me for 8 to 10 times. I have block the number but it shows in my call history. It irritating me and when he call me for the first time he only asked me that who are you and where are you from. It make me concern about that and it can be create problem for me if my family will see this. Please block that number.