Debit order

Im very disappointed with the service im getting recently from budget insurance. After 4 years and being claimed free. I changed my debit to my new salary date and that is where the problem started. It is very frustrating that i have to visit the bank because i have to dispute the debit and with Covid19 still around doing everything remotely is best option for me. So budget insurance is the only premium that is giving me problems. I get paid once a month and that date is the date only date i obviously have money on my account for debit orders. Budget will debit me on the newly agreed date and again on the date that i have cancelled. If a client has made a payment already why make another debit ? And the debit cannot be done on the same month for 1 premium! I call the agents they all give me a long explanation but the reality of it is Budget is really robbing me of my joy and peace of mind , the bank charges i get even when reversing the payment and the debit order charges all that is on me. Im very angry, i all i want right now is to start afresh with a new insurance company ,maybe this whole confusion i have with regards to me paying 2 times in one month to cover for previous and current month wont happen,because this is the explanation i get when i call. But how can i have money floating in my account 10 days after i got paid. Im really annoyed.