Extremely poor customer service and technical support

I recently signed up with Afrihost for internet service. I specifically advised the sales rep that as I teach English online I require 29/20 upload download speeds. Thw internet speed is both very inconsistent and of poor quality. I have made Afrihost awre of this problem, a yicket number was opened, over a week has passed and absolutely no technical assistance has been provided to me. I have emailed a speedtest and test results from my teaching platform (indicating poot video quality) and after repeated calls still have not received any customer service assistance. As a result of Afrihost's inaction and poor customer service, my teaching task and resulting remuneration has been greatly impaired.