What is the secret to getting my connection to work

I've talked to tech support. I replaced my router. I've had a tech come out and check the lines, replace a filter outside, replace a connector inside. Then he said he'd reach out to a supervisor to get another tech to check something off-site and I haven't heard anything since. I still don't have internet. I can't reach a real human. I try the customer service number and the automated system keeps taking me to the "let's send someone out". Already did that, I just want to ask a human a question. No? [Edited: "Language"]. I called "Advanced tech support" who sent me back to the customer service line. So what is the secret? I've tried reaching out through Messenger. I've tried the app. Do I just need to drop Xfinity entirely and call Quantum Fiber?