Cashback Disputes. All questions or disputes regarding the Cashback Reward benefit including without limitation, questions or disputes regarding eligibility for the Cashback Reward, or the eligibility of discounts for accrual or redemption, must be submitted in writing to: NX Rewards, Sentinel House, Airspeed Road, Portsmouth, Hampshire, P03 5RF, or email us at xxxxxxxx@xxxxxxxxx.xxx. See also s16 of Section A above in the Membership Terms of Service for further information on Disputes and the EC Online Dispute Resolution Platform.