Paid up Truworths account and get harassed by rude staff

Good day Easton-Berry Collections, It is with regards to a account I had mire than 15yrs ago and that is paid off many years ago. I have been getting calls from your staff for more than 2 years harassing me about this account. I have explained many times that it's an old account and it's been paid up and unfortunately I do not have proof of letters anymore because I have move a few times. Your people have no manners or any telephone etiquette a person talk nicely and they put the phone down while explaining to them or they getting rude with you. I would really appreciate it if you could please stop harassing a me about an old account that has been paid up And please sent your people for a course on how to talk to a person and have some telephone etiquette and bad manners. I'm getting sick and tired of their rudeness. They won't like such bad manners and bad telephone etiquette if I would have called them. Same count for me, where is customer service these days. Learn your people customer service. You have a lot of bad reviews on your business have a look at it and teach your staff better ways to talk to people and another thing make notes on your accounts system because it's seems they don't listen to the customers there is no excuse to let your people harassing a person all the time