Especially if you've said something verbally (including on a call or even async text like Slack), it's important to follow up with a written record, ideally email, so that they remember. Also so you have something to point back to if they don't do it.
Leople will also tune out repeated things because they're often unidirectional conversations.
Cool that you want this done today, but "we" are not doing that. Tell the client it's going to take another day instead of planning a scoping meeting and interrupting my dev time
