What we need to do instead is to stay calm and tell the stylist that the result was not what you had in mind. If the problem is due to styling, simply ask to have your hair styled differently. If the problem is with the cut, you can calmly discuss it with the stylist and see if your concerns can be resolved.
If not, you can ask to speak to the manager or salon owner and see what can be done. You probably won’t get your money back on the the current cut, but you should be able to come to a resolution that will satisfy both parties.