u/Hot-Ant-4314

I have a QS which is currently my oldest credit line and they will not increase my limit. I have had this card for almost 7 years. I started with $500, they increased it to $2000. I did stop using it for about a years time then l put a couple subscriptions on there and they increased it to $5000. I now have another Bjs Capital one credit card opening limit $11000, Amex $19000, and Royal One Visa $17000. Why won't my first card increase to at least match my other limits?