My phone number is blocked how can I unblock it

I forgot my pin, so my sim is blocked, I can't find my puk number either.

My Mtn sim has been blocked and it’s asking for Puk number with the phone number +234 9137129360

Please my sim is blocked and I have an emergency call please I need a puk number to retrieve it my phone number is 0702 632 0305

I need to unblock my number without visiting the office