Please, please, please go to
http://www.creditaction.org.uk (or call them on 0800 138 1111) who are a non-profit making organisation specialising in helping people trapped in the debt spiral. They manage your debt for you and call all your creditors to ensure that they stop hassling you. All the nasty letters go to them instead of you and they call and negotiate on your behalf. Contrary to popular belief, creditors know only to well that it is in their interests to work with these people rather than try and squeeze money out of you when you don't have any to give. Very often, credit action can get the interest suspended on debts in return for an agreed repayment schedule which they will manage, so it is well worth contacting them. If you are not desperate and just want some general help and advice, they do this too. There is lots of info on thier web site and they are always happy to talk to people and offer advice. Best of all, it is all free.