Ferry - Tallink

I'm trying to make a reservation for my son to return from Helsinki to Tallinn. Tallink Silja apparently has never, in the hundreds of thousands of trips it must have sold, encountered one person trying to buy a ticket for another person. The website won't allow it. SO, I am on hold with the company on the phone. Lucky for me I have Skype, and I pay the flat rate, so it's free to be on hold to GERMANY(?) for 10 minutes so far. In case I wasn't irritated enough, the customer service line was designed by (fill in your favorite German here). No exaggeration, there is 2 seconds of music, then it says "guten tag! Bitte something something..." (have your customer number ready). In German only, on a customer service line that I was directed to from the English page of an Estonian website. 2 more seconds of music. "Guten tag!...." 2 seconds of music. Repeat ad nauseum.

Meanwhile I am looking for a different ferry line.