In 08 Bank Of America changed my interest rate from 6% to 24% . I called to ask why. I had been using them since I started my business in '93. I asked why they would do that to a good long term customer and was told that if I didn't like it to close the account. I paid the account down to a $5 balance. They sent me a statement in the mail for 8 years and finally I got a notification that my account had been closed for lack of use.Something to consider;
As long as there are no annual membership fees (which there may be for Diner's Club, I don't know), just stop using the card/let it go dormant. Cancelling credit cards has a negative influence on your credit rating. Just stop using it and don't say anything to anyone. They don't care anyway. In essence, they've already weighed the pro's and con's of this action and have effectively thrown (present and future) gun owners under the bus. Fuck 'em, let 'em rot.
I refuse to go paperless with any business.