Van Ru Credit Corporation Wrong, illegal and rude collections Skokie Illinois

My home telephone number has been called many of times by the above company. Each time they contact my house it is between 8:30pm and 9pm. I tell them every time that they have the wrong number but they continue to call. They called tonight and each time I tried to get identifying information from them to report them the reps would become extremely rude and then hang up on me this happened about 4-5 times today. I have left a message from a management member to contact me ASAP. I dont know what else to do. This company is harassing me over money that I dont owe them and never have owed them. I have looked on the internet and it appears that this company is very shady. Can some one please help? Thank you.

Katherine
South Elgin, Illinois
U.S.A.