will spending more each month improve your chance of getting a higher increase amount on the website without inquiry?
Yes. Use the card a lot. They like that. And make big payments. Carry a balance for a little while (2 or 3 months) and then pay it off.
what if I dont carry a balance. what effect will that have. Also what if you get a refund from the store so it shows up as a credit to the account. Is that credit on the account good or bad.