Vision Smartlink Networking Pvt. Ltd. — No Internet connection

Hello Team,
I took an internet connection from Vision Smartlink Networking Pvt. Ltd. on 17 April 2021 and paid Rs.12000 but did not get an internet connection for the last 3 months. I have tried to contact the internet connection provider but didn't get any response from them. I look forward to your reply and a resolution to my problem.