Contacting HM Revenue & Customs from abroad, class 3NICs shortfall rates

I am currently living abroad and have been taking steps to pay my National Insurance gaps. I received a letter dated 17/06/2024, wIith gaps in my Class 3 NICs at the shortfall rates from 2014/15 onwards. On 28/07/2024, I made a payment of £95.10 to cover the gap for 2014/15. The payment was sent to the HMRC NIC Receipts, and my National Insurance number served as the reference from my bank account at HSBC. I have not see any correction onlne so I sent a letter to request the correction of my account, which, according the website of HMRC, was received on 31/12/2024. However, as of today, I still do not see the payment reflected in my account. I wish to pay the gaps for the following years: 2015/16, 2016/17, 2017/18, 2018/19, and 2019/20, a total of £xxxx. To ensure I did my payment correctly, I attempted to call the number 0044 191 203 7010. Unfortunately, I was informed that I would need to wait approximately 20 minutes, but I am calling from abroad so it costs a lot of money which I cannot waste. I am unsure of the next steps to ensure my online account is updated and to make the additional payments correctly as soon as possible. I would greatly appreciate your guidance on this matter.

Hi Ivana Frousova,
Please accept our apologies for the delay in allocating your payment of voluntary National Insurance contributions.
I can confirm that your payment will be allocated as soon as we can and will then be shown on your Personal Tax Account. 
This weblink will take you to details of our bank account to use for your future payments of voluntary National Insurance contributions:
Pay voluntary Class 3 National Insurance
Thank you. 
 

Dear Sir or Madam, Thank you for your reply. I called regarding the confirmation of payment again 6 weeks ago. On 28/07/2024, I made a payment of £95.10 to cover the gap for 2014/15. The payment was sent to the HMRC NIC Receipts, and my National Insurance number served as the reference from my bank account at HSBC. The receiving was confirmed by the phone call and I was asked to wait. But I still do not have a correction of my online record. I made another same transfer for gaps 2015/16, 2016/17, 2017/18, 2018/19, and 2019/20, a total of £4121 on 2/2/2025. I tried to call again but after a half of hour I gave up to be connected. I wonder how to ask to correct my national insurance record. Please suggest. Thank you very much. I will appreciate any advice.

Hi,
Unfortunately, it’s taking about 32 weeks for a payment of voluntary National Insurance contributions to be allocated to a National Insurance account. So there will be a delay before they are shown on your Personal Tax Account.
Thank you.