If your servi is mad then you need to deal with it(make it happy, kill, or dismiss it)

Ways to kill servi's
1.) get it tanking a big mob that kills it
2.) for elementals spam their elem commands
3.) make a circle and conjure an opposing servi ( if you have an angel call a devil/demon, then dismiss or bind what you called)
4.) the dismissal spell
5.) walk into the circle area of ruins of maethin then leave (the circle traps all conjured pets)