Got through after 20 minutes of waiting and 40 minutes of trying to call in the first place.
I just explained the situation, gave them a few numbers related to date, purchase price and a third number that means god-knows what, gave an email address and I'll receive more information in 24-48 hours.
^ that is the phone number, in the link anyway. It says to hit 4 to get to the right place. It is incredibly busy, but you just have to be persistent if you call. This method is probably quicker than email, even if it takes more effort. I am unsure of the email address.