From Exceptional to very poor service from Afrihost

I have been with Afrihost for a while now and have not have any issues until the last few months. Every month towards the last week of the month the internet speeds gets noticeably slow. This is a capped account and should not be the case as far as I know. Each time I contact customer service they reset something and its fine again for a little while. The last time I sent a copy of a speed test to the agent who responded to my call. The response was that I must do a speed test at different times of the day and send the results through. Not sure why this was necessary as I sent a speed test result at the time when the actual slow response was being experienced. Today I am trying to work remotely from home. Normal browsing even local sites is incredibly slow. I have tested my like this morning and it is synching at 2MB/s . I have done a speed test now which shows a download speed of 1.78MB/s which seems reasonable. So I can only conclude that certain types of traffic are being shaped or my account is being throttled. Basic local web pages should not be taking this long to load. I would like an investigation done and report of what has changed on this account in the last six months or so and why even browsing google.co.za is taking so long. I am so fed up that I am ready to take my business elsewhere right now. I will give Afrihost one chance to respond to this complaint before closing my account.