If you encounter any payment issues (overcharge, double charge etc.), you can request a refund directly at the till at the outlet where you transacted. The till operators will be able to process a refund directly through your Yoyo app.
If the cashier has agreed to give you a refund, open up your payment tile and scan the QR code against the Yoyo accepting device at the till.
Always feel free to email us at firstname.lastname@example.org.