****** identity....home choice *****

i have never ever ordered anything from home choice and suddenly 3 months ago i received a debit ordered from my bank to home choice i manage to cancelled it via my app but these people are persistent,they have all my details how they found it i dont know the address they delivered the goods to i dont stay never did they insist that i must send FA David with certified ID docs which i did and its came back via my email system .....response from remote server rejected the email address) im not sure what to do know they keep calling and every time its diferent girl i have to explain over and over ...whats wrong with these people.THEY STILL OWE ME and they know because they can see on their system the last debit order i cudn stop via my banking app 13 dec 2019..please help