How do you opt out of arbitration?

Hi -this question doesn't seem to belong anywhere else. New terms of service say:

14.6 Acceptance of Arbitration and Right to Opt Out. Within the first thirty (30) days of your use of the Services and Software or the date of the last update to section 14 (Dispute Resolution, Class Action Waiver, Arbitration Agreement) of the Terms, whichever is later, you have the right to opt out of the arbitration and class action waiver provisions of section 14 (Dispute Resolution, Class Action Waiver, Arbitration Agreement) by sending us written notice of your decision at the address set forth in section 18.2 (Notice to Adobe). If you opt out of these provisions, Adobe will also not be bound by them.

I want to opt out, but they don't provide an address. I'm trying to chat with someone and I can't get anything rational out of them. No address, no web page, no way of actually opting out. Anyone know what/how to do this?