My answer would be “well get on and fix it then!” *click* The simple rule is, never click on an unsolicited link and always call back on a known number if you need to check.
My son's had a letter from HMRC, telling him he owes £2600 from April 2020. The helpline number is listed as potential scammer, others have been given this number to call and sort out a payment schedule. Don't get suckered gang.