Was sold a used device registered to another company

Never buy Yoco the support and after sales is shocking. I received my device yesterday. After i linked the device i received a message saying business is not linked. After trying to get hold of the support team after several attempts I noted that the serial number of the device differs from the box and the device is registered with another company. No one can give me clear answers of the device is a second hand or why it is registered with another company. So basically new unhappy customer with a device he cannot use.