Well, This is completely inmmature of you both.
This wouldnt have happened if you would just take this situation as if it was a joke.
Piratez is great. You can't leave because of one single guy. That is stupid.
Besides that, just ignore the people that fuck off with you or just talk to your leader and tell him to add that bitch (Not referring to Cole) to the black list or just dont respond to his messages.
Its that simple!
You need to advertise, good clans do it all the time without even deciding on it. Advertising can generally be summed up with 3 actions:
1. Playing ingame and playing well
2. Being forum active and helping people/adding to discussions
3. Being active in the market