Credit Cards Debt

I have a lot of debt and thought best to join a credit counseling agency for help. Now my credit has dropped 200 points and I want to buy a house. What do I do to improve my credit? Will I be able to get a loan for a house?

Sometimes i get letters from credit card debt angencies saying i owe the same balance that i had for 6 years, but sometimes shows more balance with intrestest but only one letter said this, the rest all had same balances which were 6 years ago when i was in debt of £2,000, but one letter [...]