See below a quick guide for your pack usability:

• For data and voice usages, you can connect with any network in KSA (Mobily, STC, Zain)
• When making outgoing voice calls from your pack, you can call any number in the UAE or any number in Saudi Arabia, i.e. local calls within KSA (excluding roaming outgoing calls to the rest of the world, satellite, maritime, in-flight and premium numbers)

Outgoing voice calls to countries other than the UAE and KSA are not included in the voice allowance and will be charged at standard roaming rates.

No, cancellation is not possible.

Yes, you can simultaneously purchase different roaming packages.
If you roam in Saudi Arabia, this KSA Roaming Pack will have a higher priority, as it is specific only to this country and cannot be used anywhere else.

For example: KSA Roaming Pack + Economy Class Pack

• When you start a valid roaming usage (whether voice or data), it is consumed first from the KSA Roaming Pack
• Once voice allowance reaches fair usage policy limit, succeeding calls will activate the Economy Class Pack
• Data roaming usage will still be consumed from the KSA Roaming Pack after reaching the fair usage policy limit, but at a reduced speed