No refund

2 weeks ago I sent an invoice for a refund and to date it still has n9t been paid. They ket rejecting it asking for m9re details but they don't mention what detail is missing. I would call to find out and then get the information then send it. And then, they asked for proof of payment and I sent it but my claim was still rejected. My premiums are always on time but I struggle for refunds for my rightful cover. After sending the o e invoice I sent another one for something else and they keep saying they've paid it but my account is still empty.. i really feel ****med by this company. I am now blocked for using this insurance because the invoice is not finalized. I am very unhappy with your service and unprofessionalism. It has been 10 days now and they still reject my claim -