This is the procedure for escalation as outlined in the manual:
When contacting MNAO, use this contact info and follow these steps (which were cut and pasted from the owner's manual):
E-mail: click on “Contact Us” located on the bottom of the page at
www.mazdausa.com under “Help”
By phone at: 1 (800) 222-5500
By letter at:
ATTN: Customer Experience Center
Mazda North American Operations
200 Spectrum Center Drive Suite 100
Irvine, California 92618
P.O. Box 19734
Irvine, CA 92623-9734
In order to serve you efficiently and effectively, please help us by providing the following information:
1. Your name, address, and telephone number
2. Year and model of vehicle
3. Vehicle Identification Number (17 digits, noted on your registration or title or located on the upper driver's side corner of the dash)
4. Purchase date and current mileage
5. Your dealer's name and location
6. Your question(s)
Following that, if you aren't satisfied with your experience with MNAO, you would then file a complaint with the BBB (info also located in the owner's manual).
In the meantime, while the issue is being dealt with, you can do the following to test/prevent the rear hatch from opening when you don't want it to: