Airtel — airtel dth set top box issue

Address:

600007

I have raised problem with set top box on 28-sep, engineer visited and confirmed fault with set top box and it needs to be replaced. After that no one have called us and no updates about the ticket. These are ticket numbers raised so far for fixing 1 simple issue (Replacing my set top box). Everytime i got different answers when calling customer care number, sometime it is said "server is down can't fetch the details we will give call back soon". Still not received call back. Sometimes it is said "no stock of set top box sine 28-sep". If stock is not there even if you have shipped other states by now it should have reached chennai. Still i have not got any solution.
Ticket numbers:
[protected]sep
[protected]sep
[protected]sep
[protected]sep