PREMIUM REFUNDS NEVER PAID!!!!!!!!

In January 2021 I requested a payment holiday on my Old Mutual Retirement Annuity. The process was eventually finalised and payment holiday was granted effective 13 February 2021. On 15 February 2021 a premium was deducted upon which I asked for a refund, after sending all the requested documents ie salary advice and bank statements I was eventually told that it had been diarised for 15 March 2021. On 15 March 2021 another premium was deducted, upon which I sent through another refund request. I was then informed that it was diarised for 29 March 2021.......Guess what......NO refund of any premiums has been received to date and the Client Customer Centre is no longer replying on my emails. I want to know when my refunds will be paid out????????