Customer service

I called Vodacom and was transferred from department to department and finally got through to Keisha , the first thing i heard was a huge yawn , it sounded like she just woke up from sleep . She didn't even hey hello , she just said that some one else was going to assist me and she didn't even ask what was my query she was ready to drop the call on me . I had to argue with her in order to get assisted and she was not listening , I had to explain myself so many times . When i asked how she feels about the service she gave me she played the blame game ,which was very unprofessional