Lack of respect

Good day,<br> <br> I received a call from a lady named Patience offering me extra data at a reduced rate. I took the call and listened to what she had to say. I did some quick calculations and worked out it really was not going to pay me for this service to be added to my account. I said in an extremely polite manner that I was not going to take up the offer for the service. <br> <br> There was no thank you for your time or good bye- the call was put down in my ear. I am not the one that called her and took time out of her schedule. I listened to what she had to offer and was pleasant to her and she was rude to me for no reason. I understand call center work is not easy, but slamming a phone down for no reason is unacceptable. All she needed to say was thank you and good bye!!!