So, we got some options here what exactly happened.
1. There was a bug in the Login system, someone got into your account by accident,bought that stuff,used the seal scrolls and logged off. probability: below 1%
2.Someone is using a similar e-mail + password with only small differences on the same server and logged in by accident. probability: below 0,0001 %
3. You got some Spyware on your computer. probability below 10% ( scan your pc with anti virus/anti maleware software)
4. You gave your acc info away and that person is mad at you/wants to troll you.... probability over 90%
But we are not here to accuse you so scan your pc for any stuff that shouldnt be there and change your password to something thats safe everywhere you used the same logins.