Complaint Letter

Write a professional complaint letter for the following situation:

**Details:**
- Recipient: [COMPANY/AUTHORITY]
- Reason for complaint: [DESCRIPTION OF THE PROBLEM]
- Previous contact attempts: [DATES AND RESULTS]
- Evidence/Documentation: [INVOICES, PHOTOS, CORRESPONDENCE]
- Desired resolution: [WHAT I EXPECT]

**The letter should:**
1. **Subject:** Clear and specific (customer number, date, reference)
2. **Facts:** Chronological presentation of events
3. **Previous Efforts:** What has already been done?
4. **Legal Basis:** Reference to warranty, terms, consumer rights
5. **Demand:** Clear, reasonable demand with deadline
6. **Consequences:** What happens if no response? (Legal action, consumer protection, public)
7. **Attachments:** List of enclosed evidence

**Style:**
- Factual and firm, never emotional or insulting
- Fact-based with dates and evidence
- Polite but unmistakable
- Set a deadline (typically 14 days)

Replace placeholders in [square brackets]: [COMPANY/AUTHORITY][DESCRIPTION OF THE PROBLEM][DATES AND RESULTS][INVOICES, PHOTOS, CORRESPONDENCE][WHAT I EXPECT]