SW30,
Welcome to the club. That club being those trying everything to achieve GW success with WF! Last week after 8 months I finally received a letter from them saying they would delete the negative information reported on my account. Hopefully I see that change across all 3 bureaus soon enough.
I have used that email address you mentioned in your post multiple times, but it never yielded a favorable response. Usually following that generic reply email you received, you'll receive a letter in the mail in a week or so letting you know that they're researching your request and will provide a response by such and such date. They may also call the phone number they have on file for you and say the same thing. Their response will come in the way of a phone call by such and such date; you'll receive a call from the Executive Office and chances are it will simply be to deny your request. I've been through this 3 or 4 times.
I've had better luck with snail mail to be honest. I recommend the Saturation Technique as referenced above. You can read about that here:
http://ficoforums.myfico.com/t5/Rebuilding-Your-Credit/The-Saturation-Technique-Best-GW-adjustment-o...
While it did take me 8 months, I did ultimately achieve GW success with WF using this method.
