Miway taking chances after policy is cancelled

I called in the beginning of August to cancel my policy. They told me I can cancel on the MiWay App. I went on to the app and spent almost an hour trying to find this functionality on the App - it does not exist. I then called again and cancelled my policy on the 12th of August. I never received any information or conformation that it has been cancelled. I also haven't received my pro-rata amount back from the 12th. Then on the 1st of September another debit order with the full amount went off!!??

I then called again - assuming it might have been an honest mistake and they 'forgot' to cancel my policy - but low and behold - it states that my policy has been cancelled on the 12th of August on their system.

They are taking chances and would've probably taken the monthly debit order until I did something about it. This is unacceptable. A reputable company taking chances like this. NOT IMPRESSED. I was a loyal customer for more than 3 years and had NO claims and now this is how I get treated.