Review your ADT contract for cancellation terms, notice requirements, and any early termination fees
Contact ADT customer service by phone to request cancellation
Be prepared to verify your account information and identity
Ask for the exact cancellation process and the final billing date
Request a confirmation number or written confirmation of your cancellation
Return any leased or rented ADT equipment if required by your agreement
Ask whether you need to schedule equipment pickup or use a return shipping process
Remove any ADT signage, yard signs, and window decals if applicable
Cancel any related automatic payments or update your payment method after the final bill is settled
Follow up in writing if needed to confirm the cancellation was completed
Keep copies of all cancellation records, receipts, and confirmation messages