You can contact the Pension Service on 0800 731 7898 about your State Pension, including claims and payments. Lines are generally open Monday to Friday, 8am to 6pm; check GOV.UK before calling in case details change. If you use a textphone, call 0800 731 7339. From outside the UK, call +44 (0)191 218 7777, and have your National Insurance number ready if possible.