Harrassment of Non- account holder by Ackermans

Getting 5 to 10 calls a day asking whereabouts of my younger brother and each time I have to explain to rude agents that I don't leave with him and don't understand why I'm been harassed with phone calls when I don't even have an account Ackermans..I'm been harassed on my private and personal phone just because they can't get hold of a 37 year old man who used my phone number as a reference not a phone to call if he doesn't pay his monthly account .Please stop harassing me I don't and I'm not willing to have an account with Ackermans