There are 2 ways to do this:
Please go to any of your products and see if it shows a "Addons & Extras" Option you can use that to add extra space to your service or --
Instructions to Buy Custom Amount of Gig's:
Please go to this link in our shop: (Bundles & Specials)
You will notice a product called "Extra Gig's for Any Service" you can click on "Order Now" or here is the direct link:
It will ask where you need this service added, please specify this clearly and press "Continue"
On the next page you will notice "Apply Promo Code" Tab, you need to enter a code here if you have one.
Then Click on "Click Here To Validate Code" to get the discount you where offered by Admin.
If you need to set a custom amount of Gigs to buy, you will find a "QTY" field just above, you can now set any amount of Gig's you wish to buy and just click the small "Update" button.