NEW YORK (LowCards.com) — The Consumer Financial Protection Bureau launched a complaint database in November 2011, and it collected more than 25,000 complaints through mid-September 2013. A report released Jan. 14 by the U.S. Public Interest Research Group summarized some of the findings.

The credit card issuer that got the most complaints was Capital One, with 5,265 or 21% of the complaints. That was followed by Citibank at 18%, then Bank of America and JPMorgan Chase at 13% each.

When you look at the number of complaints based on the purchase volume, though, GE Capital ranks lowest among issuers. GE Capital got 88 complaints for every $1 billion in transactions — much higher than the other companies. Capital One, by comparison, got only 46 complaints for every $1 billion.

The good news is that approximately 40% of account holders who registered a complaint with the CFPB have had their problems resolved since filing the complaint. Roughly 29% got some type of refund from their credit card company, with an average refund of $128.

The most common complaint concerned billing disputes (16% of the total complaints), followed by difficulties with APR or interest rates (10%) and trouble with identity theft, fraud and embezzlement (7%).

— By Bill Hardekopf