Voice Mail and Missed Call Alert Activation/Deactivation

[#1]

To Activate:
UMB

Postpaid
*128*1*10*1*4#

Prepaid
*128*1*9*3*1*4#

To Deactivate:
UMB

Postpaid
*128*1*10*1*1#

Prepaid
*128*1*9*3*1*1#

[#2]

Thank you,Bellsa and Whysee...unknown to me..all the charges i incurred added up to a small amount, each missed call or voice mail the caller(s) left from a few cents to as much as  $2.70 .Now i deactivated no more  charges to me