Why you have to contact your specific home club, not corporate
Cancellation goes through the individual club where your membership is based, not Anytime Fitness corporate or any other location. Because nearly every club is independently owned and operated by a franchisee, the corporate office typically cannot process cancellations and will redirect you to your home club's staff or owner.
Your home club is the one tied to your agreement, usually where you signed up or the location you formally transferred to. If you've moved or rarely visit that club, you still cancel through it, which is why a phone call is often the fastest path when you can't easily get there in person to confirm who handles your account.
Notice periods, written notice, and returning your key fob
Most clubs ask for written notice and a notice period that is commonly around 30 days, but the exact requirement is set per club and per contract. Some accept an in-person cancellation form, some want a signed letter or email, and some have an online or mailed process, so confirm the accepted method before assuming a phone call alone ends billing.
Plan for one or two more charges after you give notice, since billing usually continues through the notice window. Many clubs also ask you to return your key fob or pay a small fee if it's lost, so ask whether fob return is required and whether it affects your final charge.
Contracts vs month-to-month, relocation, and getting written confirmation
Whether you're in a fixed-term contract or month-to-month changes your options and any fees. Month-to-month memberships typically end with proper notice, while a contract still inside its term may carry an early-termination fee or buyout, so check your agreement or ask staff for the specific terms before you commit to cancelling.
If you're relocating, ask about transferring to a club near your new home instead of cancelling, since the network's access model often supports moving your membership. Either way, get written confirmation of the cancellation and your final billing date in email or on paper, and keep it in case a charge appears after your stated end date.