CASH CRUSADERS FAILED ME

I pawned an item that i was suppose to pay for on 2023-05-27 but i was away and was only coming back on 2023-05-28 which fell on a Sunday...i understand that they give you 1 day window period which is why paying on the 28th was not much of a train smash but when i got to the shop i found it was closed apparently they dont open on Sundays. They had sent me a link that i can pay use to pay but i had the money cash and i was in the village so no ATM to deposit to my acc so after finding the shop closed i went to deposit the money and use the link they sent me but it said it had expired so i couldnt understand how the link had expired yet it was still my window period so i quickly emailed a guy that once helped me with my other pawn/loan hoping he would help but i got no reply so i used other ways to contact them on Monday morning and i got the automated reply that they would look into it but until today (2023-06-01) they still havent contacted me, i cant find the Head Office contacts and the East London (Caxton) branch number always says its busy.