We cannot help you with bans other than to tell you to contact the network or channel where you were banned. Only they can remove your ban for you. Networks usually have a website with contact information that you can use to ask for help. Channels may or may not have contact information available and you may need to try and contact a user from that channel or ask someone else to go in there to ask for help for you.

Invision Support
#Invision on irc.irchighway.net