You can check the available credit balance on your Wasel service by simply dialling +9714004121 from any standard telephone available in the country where you are roaming and following the voice instructions.

Yes. Both these numbers are charged as per IDD rates.

The Wasel International Roaming Service has no deposit, connection, quarterly rental or activation charges. When you receive a call while roaming, your caller (from the UAE or elsewhere) will pay the call charges for a call to the etisalat network and the user pays charges for the international rerouting of the call from the UAE to the country where you receive the call.
An extra roaming surcharge is also applicable by that country and this could vary from 10% to 25%. Incoming Roaming Call Charges are as per the existing charges for normal GSM Roaming.