While i dont have any examples of shoutbox statements, i've looked into profile comments and the only two that i can see are the two from spider two years ago about him not accepting your friend request, the others seem moderately complimentary with comments saying you look like Samuel L Jackson and such. In posting the post you reported wasn't really trolled because before you edited it that was the picture you put up (lovely australian bloke).
I would like to do something but i need evidence before i can help you. You can quote me from pm's or screen shot the shoutbox as an example.
its not that your apologies are meaningless, its that the best way to make the drama go away is to just leave it behind and forget about it. every time you bring it up again that makes everyone else remember what you did and then they complain again. the best thing is for you to ignore the haters and just do, because if you dont i'm going to keep recieving complaints and i can only ignore those for so long.