General advice only. It isn't legal or financial advice.
1. Look past the star rating
Open the courier's page and filter to reviews with proof. Recent verified reviews tell you more than an old average.
2. Check the complaint topics
The review summary shows what people complain about most: lost parcels, late delivery or refunds.
3. See how they reply
A courier that replies quickly and gets “Resolved” confirmations is more likely to fix your problem.
4. Protect your payment
Use a card or e-wallet with buyer protection, and keep your receipt so you can review with proof.