as far as i can make out the debts are with mobile phone companies .

i have discovered some letters from debt recovery agencys for my son, who lives with me .It states on the letters that they can come and remove items from my house.Does this mean that anything in the house can be removed by them or can they only remove things that are his?If they can only remove things that are his,will i be expected to prove that the things which belong to me are actually mine?Getting very concerned that i will lose my belongings and the belongings of my other children due to my son (29 yrs old) not paying his bills!! Also if these agencys go to court as they are threatening to do so will this mean that my address is what would be black listed or is it just the name of the person who owes the debt?