Debt collector

I am looking for a professional debt collector to help with a credit card debt situation. The desired outcome from this project is to negotiate a settlement. I will not require any assistance with legal documentation, as I am not seeking a fully-fledged legal solution. The debt collector must specialize in credit card debt collection and have experience in successfully negotiating settlements. This project is particularly time-sensitive and I am looking for someone who can act quickly to achieve the best possible outcomes.