I need contact info for capable Business UVerse HSI presales questions re: contract & technology

I'm considering Business-class UVerse HighSpeedInternet service only -- no upsell to/of phone, TV, wireless.

I have contract & technical presales questions.

I need to speak to a relevant & competent human being -- someone who specifically deals with Business accounts, and either has, or can get, answers to my technical questions.

After 3-weeks I've gotten nothing but runaround and astonishing lack of technical awareness, let alone competence.  And, unfulfilled promises that "we'll have somone call you in the next 3 business days" ...

I need a DIRECT phone # or email -- not yet another Gordian knot of a voice tree @ the wrong department.

I'm in Foster City, CA, zip code 94404.