Dear Mr. xxxxxxxx,
Thank you for your email inquiry.
We understand your frustration regarding the unavailability of seats and we do apologize for this inconvenience.
We wish to inform you that redemption seats are limited and subject to availability as determined by Qatar Airways and the Airline's Partner Programmed. The availability could also vary depending on seasonality wherein there is a high demand of revenue seats.
As per the terms and conditions on redeeming an award ticket or upgrad using miles, this is possible should redemption seats are available. We understand that in some cases there are still revenue seats left, however this can not be used for upgrade using miles as these are not redemption seats.