Bad Upgrade Experience

I received a phone call at about 16:00 on 13 May from someone in contact upgrades. He was rather irate and just flew into his speech. When I asked him to slow it down and let me ask questions, he hung up. I want a copy of the call recording and to know who this agent is. This happens everytime I come to contract renewal and I think now it is time I migrate to Vodacom. After 20+ years, I am sick of this.