Premium refund post members death

On the 26th October my mother passed away she was a member of Polmed (***). On the 28th of October I called to inform Polmed so they would cancel her membership. Her death certificates were sent. In February I received the letter of executor and made contact again to Polmed regarding a refund of premium as the premium went off on the 30th October for the month of November. Documents were sent on the 04th of March query numbers (040321QGP62M & 040321QGP640) no response post the automated response. On the 14th of May I called Polmed agent confirmed that documents were received but system would not allow him to access them. I was requested to resend my details, with frustration I asked for the complaints department email which to date has not responded (140521QKRGHF & 140521QKRH05). Even in my mom’s passing I need to come to Hello Peter in order to get a response from Polmed. It’s been very tedious