How can i become SIM card retailer

I wrongly entered my sim card Pin and am blocked Phone number: 08033304414 Puk Code: 74164358

I made a mistake with my pin and it resulted in my sim card being permanently blocked. Kindly assist in resolving this

I bought a MTN sim card yesterday and I was told to insert the sim card to a phone at night. When I did that I now received a message to dial *853# which I did, and I was seeing...

Can I deactivate my SIM card online?