Either works for most complaints. Keep a copy and proof of sending; for big amounts, registered mail is safer.

What if they don't answer?

Escalate to the ombudsman or consumer body in your country. The notes under your letter name it where we could verify it.

Should I sound angry?

No. Calm, factual letters get results faster — and read better if someone else reviews the case later.

Tell us what went wrong. Get a firm, polite complaint with your reference, the remedy you want and a deadline.

Your document appears here

Answer the questions and press Create. You'll see it before you pay anything.

Email or letter?: Either works for most complaints. Keep a copy and proof of sending; for big amounts, registered mail is safer.
What if they don't answer?: Escalate to the ombudsman or consumer body in your country. The notes under your letter name it where we could verify it.
Should I sound angry?: No. Calm, factual letters get results faster — and read better if someone else reviews the case later.

Answering a document you received?

Upload it and we'll write the reply from its own numbers and dates.