You need to get an active Telkom line for internet access and it does not need to be DSL active as Afrihost can request the line conversion on your behalf. To complete the normal line into DSL, the process takes 14 to 30 working days to complete but during that tme you will not be billed until the line is active on Afrihost platform, which will activate a selected/ordered data package automatically. The line can be converted within a week or two depending on the Telkom workload in your area. After that Afrihost will wait for the management of the line to move over to them and the order is complete.
In regards to the order number, i think the consultant wanted to know if you had applied/ordered for a line with them already to track process.