Unprofessional Real Estate agent

I called this company as they are close to my home, I am intending to sell my house, I was greeted in a seriously unprofessional manner, I decided not to use them, however a lady Meriam Dikgale called back and I allowed her to come and view my house. I heard nothing for three weeks, then a call from her trying to re-establish contact. Seriously unprofessional, how could I trust this company with an important sale