Corporate arrogance

My vodamail email adress was recently cancelled by Vodacom. When I phoned to find out what the issue was i was told I no longer have a Vodacom cell number. The e mail adress was was allocated to me some 10 years ago. I was retrenched some 4 years ago and have been paying off the outstanding balance. I still have a second sim card with Vodacom for data useage. I received no notification of cancellation. I was told that I cannot use my e mail adress. I asked to be reffered to senior staff who would not take the calls. I managed to get hold of an Executive assistant Susan who promised to assist.3days later no respionse and not availalble to take my calls. Spoke to another executive assistant who told me Vodacom can do what they like with my e mail adress and cancel it when they wish to. The outcome is still no email adress with no feedback from Vodacom despite me leaving messages. All requests to speak to management have been ignored or declined by the junior staff as the management are not in the office or do not speak to clients. I wonder how many other clients have had the same issue and unprofessional response.