Pooja Enterprises — FAKE SERVICE

Address:

West Bengal

I have got a call from Aquaguard franchiase in the name of POOJA ENTERPRISES having head office at:
A - 102/A, Dilshad Colony,
Delhi 110095
Phone nos.
[protected],[protected], [protected], [protected], [protected], [protected]
They came to my place on 10/04/2011 & changed the water filters & inform me about a scheme in which i have to pay Rs.2000(receipt received) and in which they informed me that i'll receive a gift after 2 weeks & 8 free services in next 2yrs & renewal of AMC will be done by paying Rs.165 each year subsequently. But till now i haven't received any gift neither getting any response on phone, even most of the phone nos are out of service. What should i do?