Shocking service

I am actually shocked and devastated at Vumatel. The consultant screamed at me and kept shouting at me over the part where I was trying to explain that the change of address was processed and all fine on the ISP side it's Vumatels issue. After being cut off a few times the consultant had me in tears the way she shouted. All I need is change of address and Vumatel is the only fibre provider so I'm caught. They said they tried calling all day but I don't have a single call.