Yep its very hard to even unlink and unlinking Wipes all account data from the PSN account as stated in the Warnings...Sounds like classic support ticket territory to me ... I’m not sure I even know how to unlink them in the first place!!
Ok.Bottom line NEVER unlink your account on PS4 as it requires CS to fix it.
I raised a ticket as advised and that issue is sorted ,thanks have another problem so have raised another ticket,just waiting for a reply .As others have said, raise a ticket and support should be able help. I had the very same problem a few weeks ago.
Submit a request – Frontier Support
customersupport.frontier.co.uk