Worst company known to man

I came in because my bill shot up about $35/ mo. The agent then told me to downgrade to 300mpbs and add a phone line and I did. We got disconnected and I lost phone service. I opened a chat, and I kept getting passed around to agents who repeatedly asked the same questions. I got frustrated and went to the xfinity store to get cell service and they were able to help me. I then lost internet service and called back, the agent told me I needed to be upgraded to 800 mbps and not 300. He upgraded me for a lofty prIce. Whenever I open a chat to file a complaint and ask to switch me back to 500mbps. Agents offer to cancel my service, even though that's not what I asked. I have another service provider coming Thursday and CANNOT WAIT  to leave Xfinity for good!