✔ 最佳答案
Dear Sir/Madam,
I am writing to complain about the poor performance and setting in telecommunication of your company. I am annoyed by the weird fact that the download speed is extremedly slow at some settings. I find that while it is much faster to log on to Google, it takes a very long time to log on to Office 365. I had a meeting with the technical staff of the China office China Telcom and they attempted to rectify the problem but failed. The same annoying problem still exits.
I amd rather disappointed at the fact that the slow download speed has not been rectifief as it has seriously affected the running and efficiency of my daily routine work. I therefore hope that you can look into the problem seriously with a view to solving the problem soon. Your prompt reply or feedback is highly appreciated.
Yours faithfully,
XXxxxx