I have raised this issue internally and it's unfortunately unlikely that this issue will be resolved any time soon.
As this answer might not be satisfactory, we are able to offer you the opportunity for a refund if you do not want to keep the server.
Please accept my apologies for the inconvenience.
Thank you for contacting SoyouStart regarding your bandwidth issue.
After investigating the case, we have found that the issue is due to the ARM network driver, this is not a problem we can fix, this has to be addressed to ARM directly.