Unfortunately ADSL lines are still managed by Openserve/Telkom, and if you suspect there is a problem with your line, you will need them to come and repair it. I have had a similar experience with ADSL before, and as soon as Telkom came out to work on the box in the street, my ADSL improved a lot.
Please keep in mind that this is a public forum, and posting personal details is not advisable. Answers provided here comes from the community and not Afrihost staff directly. If there is a problem with your account, you need to contact Afrihost's support directly. You can send them a message directly from the Clientzone.