Comparedth — new connection bought but not installed yet

I have bought new connection yesterday for tata sky through comparedth and made full payment for installation and also 6 months recharge through ccavenue. After payment done, sale member told me that they will call for asking the installation date but not called yet and also not receiving my call, not listen to the complaint. I have tried all numbers mentioned on their website, some are out of service and on some when they receive, after listening that i have bought the connection, they disconnect the call, i tried approx 150 times but not getting any solution. I was thinking tata sky is a good brand and this fake behaviour is not expecting from their co-operative companies. Really comparedth is very much weird 3rd class company, their staffs are also 3rd class, not believing how they are running their company when they are ignoring their customers. I am unable to understand to whom i need to approach for my money back. Kundly help me out.