1. 1. Collect complaints about Emily's wifi, which may include relevant documents, records, screenshots, etc., to ensure that the evidence can fully prove problems, such as unstable network connection and poor service quality.

2. Secondly, contact Emily's wifi customer service, reflect the problems to the customer service and seek solutions. If the customer service can give a satisfactory answer or solution, then the problem will be solved.

Finally, Emily wifi's customer service can't solve the problem or think the problem is serious. You can seek legal aid, consult a lawyer, understand your rights and ways to defend them, and bring a lawsuit to the relevant regulatory authorities or courts when necessary.