Cancelation request

I emailed asking for my policy to be canceled as I cannot afford the premium increase I also advised that i am unable to get hold of help via telephone as call doesn't go through. Someone responded saying they tried calling me to cancel I responded giving them time they can call but no one did now o have been debited and i already got a different insurer that I can afford now I paid for 2 insurances. Please refund my money cos I can't have 2 insurances in one month since I requested on time for cancelation, this is causing an inconvenience for my other bills.