Ok bhai, it may be normal, but we are abnormal & we don't want this to happen in our country so do you have any solutions how to stop it?
A very simple solution.
Ban Afghan sims in Pakistan. Done.
From then onwards, you can catch anyone using an Afghan sim in Pakistan.
Although there is a catch, banning Afghan sims in Pakistan could harm your bilateral relationship with A'stan.
Darling, the roaming service is used through 'LOCAL' mobile operators.