Wells Fargo just raised my rate; I think this is standard for most lenders. As stated above, don't close accounts just don't use them. I’ve been fighting credit issues of some sort for the past 18 years, it’s better to let them live dormant than close them. (It’s a long story!)
On a side note, make sure you check your credit report every year!
On a side note, make sure you check your credit report every year!