Safexpress — Not refunding the double payment I made accidentally

On 01/04/2022, I accidentally made the payment twice. And when I asked for a refund, the mover who came to pick up the parcel said that they do not refund money because their system is centralised. He even told me that there is no point in mailing to the support team because it has happened before and never once have people gotten the refund.

I would want my refund.