I lost my MTN SIM card, please how do I retrieve it.08035786405

I am in the United Kingdom. Recently, my mtn sim was lost.. I need to retrieve the sim. How can I retrieve the sim. Kindly, assist.

I want to retrieve my lost mtn...

I need to retrieve that line to re-register my WhatsApp account, as the code keeps going to that line during the registration process. Kindly assist please. Many thanks