Refusal to redeem the free pizza for my supercard - Consumer Complaint for Shakeys

Hi, so I have a supercard that I purchased this month, october 25. My birthday happens to be Oct 31, and before I purchased the supercard i was assured that the free pizza can be redeemed 7 days before or after my birthday. So i tried to redeem it to the Doña Hemady Shakeys, near Robinsons Magnolia. They insisted that it should be redeemed on my birthday month, i told them that my birthday falls on the last day of the month and i was assured that i can redeem it 7 days after my birthday which will fall on november first week. They still refused to redeem the pizza, so I tried to get it on Erodriguez branch, the staff was so nice and provided it to me without a questions. Please investigate as i do have this feeling that they are doing this to a lot of people and the staff seems to be very uninterested in my concern and just keeps on providing alibis.

Thank you.