Frustrated by Crocs customer

I purchased crocs in October online during the Croctober sale. I then decided to lodge a rerun to return the crocs in December. The crocs were picked up by courier. They later communicated to me that the time frame for returns had already lapsed and therefore the return was rejected. However, it was not communicated to me how i can get my crocs back. I’ve called twice already, and sent countless emails and all they do is send me from pillar to post while putting the blame on the courier company. This is really frustrating. I want my crocs back. Tell me where i can go to collect them please. I paid for shoes i cannot wear.