Cherrinet — Non Quality Service and Service Response

I have been using Cherrinet for past 10 months. For the past 6 months the internet is laggy and the customer support team and the filed executives are useless. It is the frustration of past 6 months trying again and again to raise the complaint but without even resolving it and without my consent the customer support keeps on closing my complaint and ignoring the requested services at every level possible. I need help.