01-05-2020 10:45 - edited 01-05-2020 10:47
What do you mean you don't use the airtime? Are you not sending texts or calling people or using any data?
Either way, no you can't cancel it. Refresh contracts come as a package
Edited to add, once the device plan is paid, you can cancel the airtime and go for a sim only plan, or PAYG if you wish
on 01-05-2020 11:11