MetroFibre ***** behaviour

MetroFibre after not being my service provider since 2020 decided to all of a sudden debit my account. After I called they promised to resolve this issue , only for them to add my details onto a new statement which they got from my bank confirmation letter which they requested in order to refund me. The email trail shows them saying that they have no one with my banking details on their records with my details. After months of back and fourth since November 2024, I was told they made a mistake because someone has the same as me. I had sent them the proof of cancellation for their services from 2020, and proof of collection of their router. Their statements come with my names, which they have now added all of them after the bank confirmation letter. Regardless of me proving to them that I do not have an account with them, they seem to have someone else adding my details. Very ***** dealings.