<prompt> Human: So the problem is basically the title. I have a 720 Credit Score. These are my current cards:Discover IT Chase Freedom Department store card, and Capital One QuicksilverThe other three have raised my line of credit to 1500 and above, but capital one has stayed at 500 limit up until last month when they bumped it up to 600 after I requested a credit increase. I only have a high balance on my freedom card as it is new and has 0 APR. While a high balance isnt ideal, an emergency happened and I needed to pay a bill off. I should have the balance down to 10 in two weeks, but on the other three accounts I generally hold 5 balance on them. So my question is why have all of other creditors raised my credit above 1000, but capital one has barely increased at all. This isnt really a problem as I dont really need the funds, but having a higher credit limit would be nice to have . Capital One is my oldest account 3yrs if that helps.  <response>: I have a Capital One Quicksilver card. I had a 3,000 limit and asked for a credit limit increase. I was denied, then I tried again later and they raised it to 3,500. Then like 3 months later, I decided to apply for the Capital One Venture card. They gave me a 15,000 limit.Not sure why, but they seem pretty stingy when giving out credit limit increases, but apparently have no problem giving me a higher limit than Ill ever need on a new card. 