GigSky does not charge a monthly fee, so there is no need to suspend your service. You only pay for the data plans you purchase, and they do not automatically renew.
After purchasing a plan, you have up to 365 days to activate it. However, once activated and in use, the plan cannot be paused or restarted at a later date. It will expire on the set expiration date, and any unused data will be lost once the validity period ends.