Barclays PLC Credit Card Complaint

Barclays PLC Credit card department,

Rewards Ohio

Received email dated -/-/- from Frontier Airlines MasterCard issued by Barclays Bank, saying " earn a $100.00 Frontier Airlines flight discount every year when you spend $2500.00 on purchases with the Frontier Airlines MasterCard. I completed the the required purchases by -/-/- and contacted Barclays Bank asking when I would receive the $100.00 discount voucher. Barclays Bank emailed me saying it would take 6-8 weeks. After 8 weeks I contacted Barclays Bank again and was told the the discount voucher plan was not in effect until -/-/-.