ACT Fibernet — act > false promises took my rs 8250 and switching off phone

Address:

560029

I registered in act for having new connection for 6 months. I paid the money and the sale guy name" Santosh' said tomorrow they are going to do installation. But from that time when he took money, he switched off his phone and technicians came and told me that there is box here. The guy has blocked my number later. This is service of Act. They cheated people by having false promises and we suffer a lot. Now what should I do I don't know. Calling helpline number is also blocked.