I got banned from Valhalla about 4 mounths ago for hacking 
I made 6 or 7 unban tickets but they still don't want to unban me  
I said I'm very sorry I hacked and I promised I'll never hack again but...nothin'... 
So,the question is: 
1.How can I convince them to unban me? 
               or 
2.How can I change my PC IP?