Wawanesa put wrong address on policy

Wawanesa charged me monthly home
Insurance for a home I do not own or live in.
In April 2021 I moved into my new home, but the closing date on my old home was not until May 2021. From April 2021 to June 2021 both homes were on my policy. When my policy renewed in June, wawanesa removed my new home from the policy and left my old home on it. They continued to send statements to my new home and withdraw money from
My bank account every month. In July 2024 my kitchen flooded so I called Wawanesa to make a claim. I was informed my home was not on the policy. Wawanesa has now said they will backdate the insurance policy to include my new home since 2021 but the premiums are double. So my monthly insurance payments would go from 158 to over 300$ a month. I did not know the premiums were so high and by shopping around I could get insurance for around 150$ a month, but when I spoke to another broker they said I will have trouble getting insurance because I have been in this home for three years uninsured, so I’m high risk. Do I have any options here? I am in Ontario, Canada