Two parts of one experience
Your internet service connects your premises to the wider internet. Your Wi-Fi network lets wireless devices connect inside the space. The two work together, but buying more internet speed does not necessarily improve weak wireless coverage.
Describe the pattern, not just the frustration
Does the problem affect every area, or only a particular room? Does it happen on one device or many? Does performance change when more people arrive? Useful observations help a provider decide what to evaluate next. They are clues, not a remote diagnosis.
Prepare a simple comparison
Where practical, have the responsible IT person compare a wired device with wireless devices under similar conditions. Record the time, location and application involved. Avoid making network changes or disconnecting equipment you are not authorized to manage.
Ask for the right evaluation
A service-address check helps identify incoming provider options. A Wi-Fi assessment looks at your internal environment and equipment. Some situations need both. Ask which assessment is included, who performs it and what you receive at the end.
What to send for a first review
Tell us your current provider, the spaces affected and the experience you want to improve. A rough layout and a list of important applications can be useful later. Start with the problem; you do not need to choose the technical solution yourself.