my direct debit contribution have stopped

I was paying voluntary contributions from my bank account but the payments have suddenly stopped. Do you know why this might have happened?

Hi Michelle,
May I ask that you call our National Insurance Helpline on 0300 200 3500 (from the UK) or +44 191 203 7010 (from overseas) and they will be able to check your National Insurance account to see why your direct debit stopped.
National Insurance: general enquiries
Thank you.