Bad service

I purchased an iPhone through vodacom in February and selected cellphone insurance. When I went through the policy document I saw that the cellphone they they have insured is a Sony and not what I bought. I have been trying to get hold of the insurance department and have sent numerous emails but have had no help. I got a response from vodaroute@find its.co.za where a Palesa Jonathan , Eunice Bayly was requested to contact me with the query but nobody has called me since my initial email sent on 25/04/2019. I want to cancel this insurance policy and have my premiums refunded because you guys have been debitting for a phone I never ever purchased through you guys.