Redundancy is when the job no longer exists and they have to pay you out.
Termination is when you are sacked.
In your case you may have a claim for unfair dismissal.
They have to pay you out the work until you left.
If they have cameras on the tills they should be able to show footage.
You have 21 days to file your application and here is the link on how you do it.
You would argue that you were not treated fairly.
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