Gamble Responsibly. Gambling should be fun. If gambling is causing you a problem, for confidential advice and support, contact the Gamcare UK free helpline on 0808 8020 133 or visit their website at www.gamcare.org.uk. NSDA operates a self-exclusion policy. If you wish to self-exclude please contact us on 01924 787510 or email firstname.lastname@example.org to obtain a self-exclusion form.