SolvedSAM70140 | Manage work: customer service: SA helpline
From HM Revenue & Customs · Self Assessment Manual
The SA Helpline is a national telephone service providing help, advice and information on a wide range of SA enquiries for taxpayers, agents and employers.
The main help provided includes advice on
Tax return completion
Statement and calculation queries
Interest, penalties and surcharges
General tax matters
Contact details can be found at Self Assessment: general enquiries