I would like to block my lost sim card

I want my lost sim card blocked

I lost my sim card...And am in Diaspora....Please how can I retrieve it back.....PLEASE kindly help me out fast ...My documents are attached to it ...thanx so much.

I just got my lost sim card retrieved but i was owing on it before it got lost, will it still work?

I lost my SIM card and need to retrieve it from outside Nigeria