No. The additional minutes (promotion) are sent you as soon as you recharge.
Kindly call helpline immediately and check which package is activated against your device. I suffered due to Daraz.pk who sent me a device with 100 GB per month for 3,800 rupees package while I had ordered 3-month bundle (24 GB per month for 4,000 rupees).
When 100 GB package was about to expire Zong called me and I told them to change my package to 3-month bundle and I sent them 4,000 rupees and I got additional 24 GB as soon as I recharged. So basically I am getting 48 GBs per month under double offer for just 1300+ rs per month. Otherwise 24 GB costs 1,500 per month.