Bad service and stress refund me

Hi I took out a life policy from them not knowing it is with iwyze as I was not told this wanted to change debicheck to other bank then old mutual could not find my policy and said it is not with them I made a ***** case at my bank to get my money back as this was the first debit order that went off and send policy documents etc to old mutual just to be told 2 days later it is with them under iwyze already changed my bank and moved my debit orders over I wantvto cancel this policy and I want my money back was put through stress all for nothing bad service