Voluntary NIC's payment shortfall confirmation waiting times.

Hello HMRC, Please can someone confirm the expected processing time for overseas payments to be credited to an individuals NI account. Approximately 6 weeks has elapsed since I made an online payment. In this time no adjustment has been made to my State Pension Forecast. I wasn't intending to contact HMRC via phone until the timeframe is beyond what is currently estimated. Thanks 

Name removed admin 

Hi 
It usually takes about 10 working days for us to receive your payment of voluntary National Insurance contributions so if you could call 
 National Insurance: general enquiries, (numbers contained within the link), then they will be able to allocate your payment to your National Insurance account.  
If you are over UK State Pension Age then please mention this when you call.
Thank you.