Consumer Redressal

I bought a tikona wifi services 6days ago and in mere six days the services have stopped working and it is almost 3 days now and there is still no response for the company. I have called the call center innumerable times and they just keep saying it will be fixed in the next 8 working hours. To avoid interupption I have already paid for 6months rental in advance but still I have to face such interruptions. What is the use of paying so much if there is no use of it. I would be delighted if some action is taken against them as soon as possible.