Wrong information

I was given wrong information by a representative which may cause me to have an $800 bill. I called the next day and did not recieve resolution. I asked for a supervisor and w as met with stall ta tactics, repeating the same answer, long holds of silence, refusal to answer questions. This went on for 2 hours before I hung up. A poli y od not addressing issues and not answering questions is a horrible policy. I am filing complaint with the better business bureau.