Outsurance Managers Not communicating

I have been with outsurance for six/seven years & have always been happy with my service and the polite yet effective help from the managers and the consultants. I spoke & emailed a consultant last year Aug/Sep regarding a claim. This claim was processed & confirmed to have the old unit off of insurance (how do you keep a unit insured & pay premiums for it if you have received a payout for that unit in order to replace it). I found out in April 2018 that the unit I had cancelled was still on my premium, therefor have been paying for it for months now, a unit I don't have & have replaced with the payout last year (added the new unit onto my insurance). I have quarried this with multiple different consultants, have had a consultant that doesn't even know the story tell me she doesn't believe I am owed payback for paying unnecessarily for all these months. I have requested the different recordings, still have not been received. I have been told a manager will phone me weeks back...only for me to have to call them each time where a 'manager' has put a note on the system totally ignoring me. I am very unhappy with the service, and am looking for an alternative insurance company for my personal life insurance, car insurance, business insurance etc.