I wouldn't close the card. It is possible that they could give you a CLI in the future. If they are playing chase the balance. let them play it and still continue to use and and PIF as soon as you can.
Back in my subprime days, my 300 CL sams card got me through some rough times.
I agree. My Sam's card was my first credit card after going into debt management. I took good care of it, mostly used it at Wally Mart for stuff I really needed. It graduated to the Discover card one year later that is now over 7K CL. All from my $400 Sam's club card.