Help with repeated creditor calling.

Hi, I'm in Kentucky and I defaulted on 4 payday loans on 11-15-11. I want to pay off the same and that’'s why I've signed up with a payday loan consolidation company. But I'm still getting threatening calls from one of the lenders. Though I told them that I was working with a payday help company to pay off the debts, they are still calling me. What should I do at this point? Please help.