Poor Pudo Service

I've done everything correctly. Pudo allocated a bin to me which had a parcel in it already. Now after struggling to get support, they will be crediting my account and I have to rebook the shipment. My problem however being that I now have to wait 5 to 10 days for them to pass credit. That means my parcel will be delayed becuase I have to wait for them to refund me, for a mistake they've made. Support on this was terrible and I would urge anyone who might be thinking of using them to consider alternatives.