If you are receiveing any spam messages and calls that you did not subscribe or that you don’t want to receive again, SMS the following details to “9000”,
Sender’s cell number
Your cell number
Any details that you want to add
Or send an email to Pakistan telecom authority [email protected]
Note: Charges 10 paisas (include tax).
Read the notice below from pta pta.gov.pk

Pakistan telecom authorithy