Harman India — soundbar 2.0

I called customer support as my soundbar is not working and they told me that i will get a response within 48 hours. When i called them after 48 hours they told me it will be within 7 days from the date of complaint. After 7 days they increased additional 2 days. I called again and they informed that i will get a response in the next 24 hours. However there is still no response. I have raised complaint on 26th or 27th november 2019 and still it is not resolved and there is no response unless i give them a call and ask them about solving the problem