1234, Main Street
Boston, MA 02123
01 April, 2005
<Recipient Address Goes Here>
I have been a customer of your company [Company name] since the last [Duration].
Since the past few days, I have been facing a constant problem with your services – the websites load very slowly and it really takes too much time.
I own the latest & fastest computer in the market, so I am very sure that there is nothing wrong with my system.
As of now, I am not thinking to switch over to some other provider, but that is only if you resolve this issue out quickly for me. I just need fast speed on my computer while surf the net, OK?
Contact me as soon as possible.
encl: <List of enclosed items goes here>