Migrated me from ADSL To Fibre line without my permission, and I have no Firbre Coverage

Receiving horrible service, and have no Fibre coverage but they migrated me over to fiber from ADSL Line without my consent after endless calls, the problem still persisted, so I canceled my service and they said I can request credit. Now Billing is asking for a reference number and the references that I am giving them are apparently not good enough to request billing to check usage and credit accordingly.

I have requested a technician to come out but they closed the fault and no technician came out, I received no call or email asking permission for the migration

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