PUDO BAD CUSTOMER SERVICE

I booked a Pudo shipment this morning and unfortunately by accident booked the wrong locker size. When I went to drop the parcel off, it would not fit the locker. I since returned home and called Pudo to advise the mistake I made and would rebook for a new locker. However, when I asked them for a refund because of the mistake, they refused to give it to me. I'm absolutely astonished by this!!!. No parcel has been dropped and they have not lifted a finger. An honest mistake and they won't refund!!! This is outrageous... Fair to say, I doubt very much I will use pudo again. I will also go to social media. I've been using the Courier Guy for approx 12 years and this is unacceptable!!!