Very bad experience...harassment by collection agent Sachin (Reports to one Ketan) for connection charges not paid by previous tenant!

He drops in after every 2 months and says that he had cut the connection and I reconnected it!

Next he says that previous tenant had not paid so he cut mine!

Then he tries to bully by saying he will cut again (Which I say, please do!)!

Which DTH should I take, Tata / Big / Airtel? Kindly advise as I will buy TODAY!