I was told not to answer the door, make sure your windows are locked at all times and even if they do enter they cannot take certain items, ie sofa, washer, fridge etc. The CAB can explain to you all of this. They cannot take childrens item either. If you have a car then move it. They will more than likely want to enter into a payment arrangement but if I was you I would contact your CAB and get them to act on your behalf, they did for me, I had a much larger debt than you and have set up a standing order making regular payment. Good Luck and hope it gets sorted.