Higher rate taxpayer pension relief claim - no reply by post after months

Hello, I've previously contacted HMRC to claim relief on pension contributions made in the previous years as I was a higher rate taxpayer. The tracker showed my form as "received" since September 12, 2023, and has changed the status of the form as "completed" earlier this month, January 2024. I've received no communication from HMRC in relation by post or any other means. For my previous form I've had received a reply by post, but not this one. It doesn't appear like my tax code has been adjusted either. Is there anything I can do to chase HMRC? Thank you

Hi VeryUpsetDD,
We are sorry that you haven't received an update on your relief claim.
Please contact us by webchat or post here:
Self Assessment: general enquiries
And we can confirm the progress of your claim.
Thank you.