If a DM makes a ruling that you as a player disagree with, this is the procedure:
Please do not "shop around" with the staff, to try to get a favorable response. this is not acceptable behaviour. The team does speak to each other, so they will notice.
Any player found to be "Shopping around" for a sympathetic staff member will be warned, and placed on formal warning. Continued "Shopping" after being warned could result in a temp ban, or even a perm ban for increasing or continued abuse.