unstable line speeds for the past 2 weeks

I have been experiencing low and unstable line speeds for 2 weeks now, I've been in contact with Afrihost via the chat, ran several tests and the conclusion result is that the line needs to be reprovisioned to which they have been trying to contact Balwin but no correspondence received back from Balwin. I understand Afihost are doing all that they can but needs to hold their partners and associates accountable, as I cant keep paying for a service that im not receiving. I work remotely, my work depends on stable internet so this has cost me time and money. this is very frusttating and really unacceptable.