Just my two cents: I think you would do well by writing to them in a polite email asking them to research what happened with your account. Let them know that in no way do you desire to close out your account. I'm sure they will come through, re-instate your account, and post the points deleted.

It was probably just some mix-up by an employee. We're all human; we do make mistakes.

I know you were asking for a phone #, but I don't have one for 'em. I just thought I'd offer up an alternative suggestion.