How to recover your transfer pin back(2day)

How to change it if mtn block
your transfer pin or you have
forgotten your pin...you can use
this to get new pin,Simple type
yes in sms and send it to 556,
with for some minute youwill
receive a message from MTN in
this form,"welcome to share &
sell, your default your new pin
is 0000.MTN recommends you
reset the pin,test to 556,
eg.0000 2222 2222 and send it
to 556,You will receive
message that your pin has
been reset....thank you
all....dont forget to invite your
friend oo.