really angry and frustrated

Received a call in July to say that my home insurance premiums will be increasing on 1st September 2025, I asked the agent to please change my debit order date from 1st to the 2nd of each month, now my account has been debited twice, one on the 1st August for the current amount and again on the 2nd of August for the increased amount, so i sent off an email to say whats going on with he double debit, getting no response, i reversed the second increased double debit, Mabaso then called me who advised the double debit was because my July debit was not met, I then checked my bank account and hat was incorrect, so I asked for a manager who cancelled my insurance and supposedly reinstated now, now i am receiving sms's to say that because my debit reversed, policy is cancelled but my August debit was paid. i am really upset as this has caused a lot of unnecessary problems. i need to know whats going on.