Missed one Direct Debit for Class 2 contributions while living abroad

My wife and I live abroad and we have been paying monthly Class 2 contributions by Direct Debit for a number of years. This month by mistake we did not have enough funds in the account and the bank did not make the monthly payment to HMRC. How can we make that payment?

Hi Carlos Albar Diaz,
You can find out how to make payments online here Pay voluntary Class 3 National Insurance:
Make an online or telephone bank transfer - GOV.UK,Pay voluntary Class 3 National Insurance
Look for the Overseas Payments heading. 
We would also suggest contacting the National Insurance Helpline here:
National Insurance: general enquiries
As they may need to check your Direct Debit and give advice on resetting it if it has been interrupted.
Thank you.