Terrible customer service

I have had car insurance with Miway for 3 years with no claim to date.

On 2 September I attempted to change my bank details for my debit order 1. via the Miway app (not working) 2. Via whatsapp (no luck as the person you communicate with has no knowledge an was unable or unprepared to assist) 3. Via email (no response or update on my profile)

On 15 September Miway debited the incorrect bank account and I was charged a fee by the bank due to insufficient funds!!

I requested a call back from Miway and, yet again, the person who eventually called me was inexperienced and unable to assist.

I am extremely disappointed with Miway Customer (non) service.

What kind of service can I expect in the event of a claim???