Write a polite chaser when a refund is late

Help me chase a late refund.

Order or booking: [details]
Amount and original payment method: [details]
When they said it would arrive: [date]
What I've already sent: [dates]
Their reference: [if any]

Ask me up to 3 short questions first if anything important is missing. Wait for my answers.

Then:
1. A short, polite chaser with the dates and a clear ask.
2. A stronger follow-up if they miss another date.
3. When to involve my card issuer or a complaint process, marked to check.
4. A one-line subject line.

Only use what I've told you, leave blanks for anything I haven't given, and don't invent facts, figures or products. UK English.

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