Contact to check on National Insurance Gaps paid but not yet credited?

Hello I started recdeiving my UK State Pension this year. I am living abroad. I had already received a response from my CF83 application regarding paying voluntary national insurance contributions. Over a month ago I made a payment for a number of payment gaps. I have heard nothing since and have received no confirmation of the payment. My online National Insurance record still shows the payment gaps and the payment is not reflected Who should I contact please to check on this? Many Thanks for your help

Hi mistergreen,
Thank you for your enquiry.
You should contact the National Insurance helpline and they will check if your payment has been received and arrange for it to be allocated. The contact number is +44 (0) 191 203 7010.
Lines are open from 8am to 6pm, Monday to Friday.
Thank you.