Follow up after silence

I work in marketing at an insurance broker. Help me follow up with someone who went quiet.

Context: People go quiet because a cheaper quote arrived, the renewal date felt far off or the proposal form looked like hard work.

Before you start, ask me for anything missing from this list:
- The original enquiry and our reply
- How long ago
- Anything new that is useful to them

Then:
1. Give a reason for writing that helps them.
2. Ask one easy question.
3. Write a final note that closes the loop politely.

Give me:
- A first follow-up
- A final follow-up

Rules:
- Use only the facts I give you. Where something is missing, write [detail needed]. Never invent a number, a name, a quote or a source.
- Give general information about insurance only. Never say that a particular person or business is covered, never suggest a claim will be paid, and never call a price the cheapest or the best.
- Write in plain English, in our voice if I have given you a sample.
- Do not tell me what the rules or regulations say. If something may be restricted, flag it and I will check.

Finish with a list headed "Check before this goes out". Include these, plus anything else our compliance officer or whoever approves financial promotions should see:
- Whether the quote is still valid and on the same terms
- Any renewal or expiry date we mention, against their documents
- That we still have their agreement to be in touch