I have not. Reading thru the link you provided I don't see any benefit as the disputed charge is less than $20.00. Really not worth any additional headaches. I have already paid my last Cap 1 bill and do not plan to charge anything going forward. I will soon terminate the relationship with Capital One before renewal. I need to max out benefits before I cancel.

IMHO it cost me less than $20.00 to find out Capital One is a Crappy company with horrible customer service. I will miss the double points however there are many other options for Credit Card points programs.