My goods got billed to my account but given to someone else.

I'm soo annoyed with your Cavendish/Mayfair stores. I did a customer request for an item which was supposed to be sent to Cavendish branch. But for some reason the parcel got linked to a different customer's phone number and has subsequently been sent to a different store. The item was billed to my account but was sent to a different sent for some other customer's attention and no 1 at Truworths want to take responsibility. How can Truworths Mayfair/Cavendish get the details wrong. This is the second time something like this happened to me. Does Truworths not have any controls in place. My details and contact number was correct on their system.