Unauthorized Collection

So here we go, yesterday around 11:42am, I received an email from Mr Price saying "Your online order status has changed to DELIVERED for Order ********** 31596", I had called home to check if anyone had collected my order, but no one from home had collected it. So I decided to contact the call centre, I spoke to a lady she advised me, that she will get back to me with an answer, which she did, apparently another lady went to Mr Price Malvern, saying she is collecting a parcel for her daughter, so I decided to call Mr Price Malvern to get to the bottom of this,I spoke to manager, she had told me that the lady and I had the same online order number? Is this possible? So I told the manager I want order, she advise me that the lady whom collected the order is a regular customer,and she is trying to contact that customer to come into the store with the order, manager informed me she will call me to let me know when it's there, up untill now, I have not received any response. Reall very disappointed.