3 days to reverse unauthorised debit order and still not done

On friday morning i noticed a debit order went of my account that i did not authrise,. I went straigt onto the app to reverse the debit order but was unsuccesful as there was a technical error. Later i phoned in to try and have it resolved and was told there is another technical order. Saturday same story until now i was unable to have it resolved and in the meanwhile i am not sure if we will still be able to get the money back