Policy not adhered to

To cancel ADSL a 30 day notice period is required. I went to Telkom Cresta on Wednesday to hand in my 30 day notice. That night my internet was disconnected. When I called the call center they informed me I had been disconnected and had to reapply for ADSL. I went back to Cresta and was told I would have to wait until Monday for reconnection. Monday has arrived, but still no internet. The call center are not answering and neither is the cancellation department in KZN. I thought companies were desperate to get business, not desperate to get rid of business!