I was a customer of Barclays Credit Card for over a decade. Never had a problem until now. I had a $10k limit on my card, I made one purchase of just under $2,000 and before the charge even hit my monthly statement; I got hit with a letter than cut my total limit in half! I have had a credit card for over 30 years and never had this happen. This is a dirty business practice. It cut my credit score by 20 points and I had a credit score of 830. No late payments for years. This is intentionally trying to green up your books and it should be a completely illegal practice. Sadly, it is not as the bank can decide to raise or lower your limit whenever they feel like it. I am filing a complaint with my state's better business bureau, but I am not sure how far it will get me. I have heard many similar stories and this needs to be a class action lawsuit. I cut up the card and sent the shards back to them with a note saying you may get cut on this card like you cut up my credit score.