Bad Turnaround Time from Makro Customer Care

I had purchased an office chair with a three year warranty. There were some issues with the chair and Makro had originally refuse to sort out the chair. Then a manager (Danveer) from Makro ha assisted me and I ha taken it to Makro customer care at the end of April. Their turnaround time is meant to be maximum 21 days. I went to Makro several times and the chair is never ready. Eventually I purchased a new chair from a different store. Please can I have a refund!!!