I'm not here to tell you not to box. I'm going to make a comparison though.

I could go out tomorrow and buy a super car. (It'd be stupid but, let's say I did.) Ok so now I have this car that can easily do 200 MPH on the highway.

The state I'm in determines what speed I can go at, normally 55 mph oh the highway. Now they're not saying that I cannot use the car on the road (multibox in the game), they're just saying I cannot go 200 Mph and make other drivers uncomfortable.

Multiboxing creates a very unfriendly environment for the "victims". I was one of them. If one guy came up to me and killed me instantly I'd be a little upset. If he was in my BG I'd be more upset because of the fact, he's making the game not fun for me. I've boxed plenty of BGs and people have always come back and told me that I'm an ass because I'm cheating or whatnot. Sure I may not be cheating but I'm certainly ruining someone's night.

I can understand the desire to multibox pvp. Hell I started boxing because of it. It's very fun to have that much power, however I just started feeling bad for the other folks on the receiving end of my five lava bursts. So Trion is now facing what Blizzard faced. "Hey there's this guy creating and unfun environment for our other customers." Kind of like a family with kids coming into a nice steak restaurant and the kids keep talking. The restaurant will take your order and even take your money, but if they see that your kids are upsetting others, they'll ask you to leave. Because one table of lost business is better than a whole restaurant pissed off.

As I said before multiboxing walks a thin line. It's not really cheating, but it does really take the fun out of the game for others. So from a business standpoint I can understand.

Also I did a quite glance at their ToS

"In the event you cancel your subscription service, Trion will not refund any fees already paid or owed by you.D. Virtual Currency and/or Virtual Goods
Purchases of Virtual Currency and/or Virtual Goods are non-refundable, unless otherwise required by law."

So um that refund request is going to be trivial as you signed their ToS when you logged on or made the account, correct?