TATA INDICOM boradband customer

I live in Pune(Viman Nagar) and have been a TATA INDICOM boradband customer for the past 4 months. For the first 2 months their service was steady and throughput decent. But the last two months have been a nightmare. Their customer care is the worst I have ever seen after calling up 4 times from my cell and being on hold for more than 10 mins each time. Nobody even cares to call back and find out if the problem has been solved or not. Its really a most frustrating experience