Hydro Quebec over charging agian

Hydro charging $3000 for 84 days but lowers price to $1,400 after fauly smart meter. I complained to hydro stating they were still over charging me. I have left messagages but they still haven't returned my phone calls. When someone from hydro finally called me back he said I was lucky because I shoud of been charged more. This isn't the first time hydro has over charged me is there anyone out there that could help me out.