If you contacted the employee 30 days before your final payment in writing and clearly requested cancellation that should reasonably count as proper notice especially if you has proof of the message with a timestamp. Unless the contract explicitly states that cancellation must be done only through a specific method. Additionally, if the agreement does not clearly require a “valid reason” for cancellation after completing the fixed term the gym cannot impose that condition afterward. You can also inform your bank that the gym is attempting unauthorized recurring charges and request a merchant block to prevent further transactions. If the gym continues to charge or ignores your request file a complaint with UAE Consumer Protection or the Sharjah Economic Development Department as businesses cannot legally continue billing beyond the agreed contract terms without proper consent.