I just got a letter from HSBC today, canceling my credit card for two reasons:
Delinquency or derogatory trade line.
Number of installment trades or installments not paid as agreed.
After calling them up and talking to them, they told me that the closure was in regards to other items on my credit report, and not the account with them. Which by the way is PERFECT. No late payments, no missed payments, and a zero balance as of august. I'm actually quite certain that the zero balance for the last 4 months is the reason that the account was actually closed.