Thank you, thank you! I have been searching for this number. You can reach the chief executive officer, Michael Grondahl, on ext 101. Good luck getting them to return you call...they won't.
If you are having billing or debt collection problems:
You should sue for violations of the Fair Debt Collections Practice Act (FDCPA - Title 15 U.S.C. §§ 1692-1692p). Look specifically at sections 807 and 808 among others. Civil damages for violations are $1, 000 per violation. Also look into violations of your states debt collection laws. It very easy to show that Planet Fitness regularly violates debt collection laws. In you motion be sure to ask for court costs, resonable attorneys fees as well as any punative damages the law will allow.