Extremely Angry Client

I am getting calls from debt collectors telling me I owe blue label connect. Blue label collect collected their phone long time ago when I call blue lablenI am always told someone is going to give a call from Blue Lable. I don't owe you anything. Please clear my name ASAP. This is affectig my credit score.. Please call these debt collectors and ask them to remove my name from their system. I don't owe you any cent. +***. My name is Muchelle Hlakula you can also call me on ***