Sify customer care

I recently had a dispute with the Sify guyz. I had paid them in advance, they didn’t come across to me to install the connection. Finally I had cancelled the deal and now plan to shift to Airtel. I hope my experience with Airtel will not be the same. Thanks god I didn’t pay the Sify guyz the whole amount, otherwise they w’d have not given me anything, neither the connection nor the money. I think we need to pass these messages on to Sify customer care, if at all such a unit exists.