To do with msn plz help?

my msn contact list is getting full quick i got 800 poeple iv got rid of 200 and it still saying it and i make a new msn and it sayzz full again after about 900 people and my m8 got 1500 and my other got 1760 i need help becouse my family are adding me and i cont talk to them oh and my msn is msn 7.5 plus i want to try an keep that messager to thanx alot SAFE