Build a timeline
List purchase date, delivery, problem discovery and each support contact.
Attach relevant evidence
Order records, warranty terms, photographs and correspondence can support the facts.
Ask for a specific resolution
Repair, replacement, refund or another practical remedy should match the situation and applicable rights.
Escalate to the right place
Official consumer agencies can explain complaint routes when direct resolution fails.
General educational information only. Consumer rights, tax treatment, warranty obligations and return remedies vary by seller, product and jurisdiction. Use the actual contract/policy and current official consumer guidance where rights matter.