Barclays Credit Card Complaint

Barclays Credit card department,

Rewards California

I applied to Barclays Frontier Mastercard by -/-/2015 and was approved. On -/-/2015 statement Barclays transfered - miles ( points ) to Frontier Airlines. On - statement Barclays transfered - bonus miles after my spending requirement has met. However my account at Frontier Airlines shows no mile was credit. I contacted Barclays almost - times by either phone calls and secure messages with - case numbers -, -, -, and -. I also had - three way callings between me, Barclays, and Frontier Early Return Specialists, Barclays promised me that my missing - miles will be credit to my Early Return account within - days. They never fulfil their promises. As of today -/-/2015, my Frontier account still has no mile in it.