Unlocked phone was locked and I want it unlocked now

I purchased a factory unlocked galaxy s22 from best buy nearly two years ago and had a no contract phone plan through Metropcs, which later, years after I signed up with metropcs, became metro by tmobile. I canceled my service with Metro by Tmobile and started a plan with xfinity mobile but I am unable to switch my esim because it says my device is locked and ineligible for unlock. ? Tmobile doesn't own my device and is holding it hostage. I need to be able to communicate with my family and business associates and you are directly hindering that. I will never use your mobile or other service and will always go out of my way to recommend that others find a better service provider, one that won't try to hijack and their device without their knowledge. 

When Tmobile took over they locked my phone to their network and now I am hearing that I need to provide proof that I didn't purchase the phone from Tmobile?

The phone was not purchased from a mobile carrier at all for this exact reason. So that I could switch networks when I wanted to without going through this nonsense. 

I have filed an informal complaint with the FCC regarding this matter and will gladly escalate it to a formal complaint and go as far as is necessary to ensure that Tmobile undoes this injustice and is held responsible for their actions. This is unacceptable. You have no right to hold my device hostage like this when I purchased it outright from a retailer as an unlocked device, not to mention that I was only affiliated with your scummy service because you acquired the phone company I had service through.