Audi A4 B8 Timing Belt Replacement — Cost and Where to Go in Colombo?

Hey everyone,

I've got a 2012 Audi A4 B8 with the 2.0 TFSI (CDNB engine code). The car just hit 120,000km and I know the timing belt needs replacing.

A few questions:
1. What's the realistic cost in LKR for a full timing belt kit + water pump replacement?
2. Any recommended workshops in Colombo that specialize in Audi?
3. Is it worth doing the thermostat at the same time?

Thanks in advance!