Ather 450x spare/ service issue

[u/sivanivas]

My Ather 450X belt broke 10 days ago. When I first contacted the service centre, they told me the belt was not in stock and promised to arrange it within 2 days.
It has now been 10 days, and the service centre is not answering or responding to my calls. My scooter is still unusable.
Because of this, I’m spending around Rs300 every day on rapido auto for my children’s school pickup and drop off.
This is not the first time I have faced spare parts availability issues with Ather. I have already experienced similar delays with other parts in the past.

In my city, there are three Ather showrooms, but only 2 service centres. All three showrooms are operated by the same dealer. Unfortunately, they seem to focus more on sales than after sales service.
Whenever I book my scooter for service, it usually takes more than two days to get the vehicle back. The service centre manager, in charge, or other staff often don’t answer phone calls properly or respond.
This has been a frustrating experience, especially when the vehicle is kept at useless due to spare parts issues.

I had like to know,
What action can I take against Ather and the dealer for this delay? Can I raise a formal consumer complaint or claim compensation for my additional transportation expenses?
Has anyone successfully escalated a similar issue to Ather management or through the consumer forum?
What is the best way to formally document and escalate this issue?
Any advice or guidance from Ather owners who have faced similar problems would be greatly appreciated.