OnePlus India — Service is ridiculous

I file a complaint regarding repair service of my oneplus u1s 50" on 6 September 2022.
I bought this tv on jan 22.
And it broke just after 8 months.
Next day engineer came and said motherboard is not working
Thankfully my tv is in warranty, otherwise they charge me 7k ruppees.
Now its 25 day of complain there is not any kind of support from oneplus india.
When i call to customer care they keep saying that your complaint will be resolved tommorow.
But no one came.
So i unplug my tv and keet it aside on my sofa.
Now if someone can help pleasecontact [protected].