double debited by 3 sixty and DGH-I want to cancel and need all my premiums back and look for another company

I have been with Doves for sometime now and i am just shocked how they operate , i just got double debited by 3 sixty and DGH which will result in my last debit order bouncing. I regret opening a policy with them this has been a nightmare i got a call from them saying 3 sixty wont deactivate my debit order i need to visit the bank to stop it , as a customer i know nothing about 3 sixty i came to dove, Now i still got debited twice i just want all my premiums back and look for other companies because Doves doesn't understand customer services and i want to find out from ombudsman who is responsible for managing that administration's want to cancel i want nothing to do with this company i have been paying for years and never claimed i can imagine what will happen when i claim because they are running a ****a shop and not a professional business.