Required to do a poll on behalf of Vodacom

Called Vodacom Call Centre to report that I have a problem with signal in my area. I have 3 people in my house using Vodacom all experiencing bad reception. I was told that I need to go and do a survey of how many other people in my area are experiencing a problem with Vodacom. I Explained that the problem starts when I'm 100m from my house and therefore it's not a problem that is specific to inside my house. Therefore I cannot go poll other people as it is not my responsibility to do so, The agent stopped talking to me and after about 2 minutes she dropped the phone. I hope there is a way that she can be traced and dealt with accordingly as this is not in line with the Vodacom brand. I have been with Vodacom for more than 15 years and this is a 1st! I wonder how many other customers she has done this to and got away with it. I am a high value customer as Vodacom would say and guess what...MTN works in my area.