Afternoon sir please I blocked my sim and I forget the pin I do I recover

Hi Najib, sorry that your SIM is blocked, you can use your PUK number to unlock your SIM, you can find your PUK on your SIM pack. If you do not have the SIM pack, you can contact any of the MTN support channels for assistant.
You can contact MTN support via any of these channels
1. MyMTN App
2. Twitter: @MTN180 / @MTNNG
3. Facebook: @MTNLoaded
4. Instagram: @MTNNG
5. Live Chat: http://bit.ly/2OC5bHz
6. Email: customercareng@mtn.com
7. Call Center: 180 or +2348031000180 (if you are calling from abroad or another network)
8.WhatsApp: • 09033000001