Gift Voucher still valid, shows invalid while shopping

[imraksha]

I have received 2 Gift Vouchers from Vodafone which shows that it is valid from 23 Jun, 2012 to 31 Jul, 2012.
But when I tried to use these two gift vouchers.
The Gift Voucher Code is C52E76QKST and 5HPRRLD8KO.
Could you please help me ASAP.

[chitturirakhi]

I am also having same problem with one of my vodafone gift voucher.

[ibrahim2378]

I am also having same problem with two of my vodafone gift voucher.