Got cheated by SEBI Registered Stock Advisory company

Hi, I live in the USA. I was cheated by one of the stock advisory companies based in Bangalore. I have subscribed for a 1 month stock tips package for 3.6 lakhs. They gave me tips 2 days after the successful tips they called me to get a confirmation for their package. The same day they provided 5 calls, and all the 5 calls I made loss. I found that they were not doing any analysis before sending the tips. So I decided to stop their subscription on 3rd day. I asked for a refund and they told me they can’t refund the money. It clearly looks like a legitimate scam in the name of SEBI registered advisory company. I want to bring this up and make others not fall into the trap. Other advisory companies charge 5K to 10K for this service. They were giving a lot of profit stories and screenshots before the start of the subscription. They assured me of 95% accuracy. I have been trading their calls for 3 days. The actual accuracy is only 18% accuracy. After the subscription, I found that they are not following basic analysis. I want to sue them. Also, I’m going to complain to SEBI and other government bodies. Including the PMO office. Please give me your valuable input. Thankyou, Satheesh