Vinovin got in ahead of me. I've been trying to get past AB's technical problems for hours. Anyway, here's what I've been trying to post:
Ok, now you've really got me confused!
I've never heard of Sungold. They've certainly got nothing to do with Lavavasoft who produce Ad-aware.
I can only think of two reasons why you might be getting those e-mails. The first, of course, is that they could simply be random spam. The other possible cause is that you might have downloaded rogue software which is pretending to be Ad-aware but is, in fact, a different program designed to extort money from you.
(Sungold.co.uk appears to be a computer repair company, or something similar. It's website proudly proclaims the name of its designer. That's probably not a good idea because the site is slow to load and includes non-functioning links and spelling mistakes! Sungold.com is the website of the manufacturer of an all-purpose cleaning solution!).
Ignore the e-mails. Uninstall your version of Ad-aware. Then, either download it directly from Lavasoft and re-install it, or switch to Ad-aware's biggest rival, Spybot:
http://www.lavasoft.com/
http://www.safer-networking.org/en/index.html
(It's worth remembering that, because they don't continuously run in the background, there's no reason why you shouldn't have several anti-spyware programs on your PC. You'll only run one at a time so, unlike firewalls and anti-virus sotware, there won't be any possible problems with conflicts).
Chris