NI refund - Expats transferred to UK

I made NI contribution during my employment in UK during Jun'19 to Jul'22 (3 years service). My NI contributions which forms part of my life savings during Jun 2019 to Jul 2022 whilst working in UK under Tier 2 ICT (Intra Company Transfer visa), which do not allow for permanent settlement in UK and as I do not have opportunity to avail the retirement benefits in the foreseeable future at UK. Since the assignment was purely temporary in nature within the company transfer(India & UK), I requested HMRC to refund the NI accumulations however the claim was rejected multiple times . Could anyone/HMRC review the merit of my case and suggest solutions for successful NI refund as I no more work in UK and do not have foreseeable future working in UK to claim the social benefits.

Hi Baskar Arumugam,
Thank you for your enquiry.
Unfortunately, without accessing your personal National Insurance records, we are unable to answer your query.
You will need to contact our HMRC helpline, or write to HMRC to ask them to review your request, or provide a full explanation of why you are not entitled to a refund of National Insurance contributions.
Our contact details are: 
National Insurance Contributions & Employer Office
PT Operations North East England
Payment Reconciliation
HM Revenue and Customs
BX9 1AN
0300 200 3500 (+44 191 2037010 if calling from abroad)
Lines are open Monday to Friday from 8am to 6pm.
Thank you.