How it is possible that you are not cheated in Pakistan. So that was the 100 GB additional volume they sent me and I thought it was against double package of three months (24 GB).
I opted for three months bundle of 24 GB for 4,000 rupees with 2,500 device of Zong 4G at Daraz.pk.
Today I called Zong helpline just to check and they informed me that a package of 3,800 rupees per month for 100 GB is activated on my device.
I paid to Daraz.pk 4000 rupees for 24 GB/month bundle for three months, not 100 GB package for 3,800/ month.
I have sent an email to Daraz, let see.