I Let You Know

I always thought 'I let you know' (without an indication of when you are reverting) was a good way of expressing disinterest politely, delaying till the other party forgets, gives up asking etc. It has worked well for me and the incident below was an exception.

P.s names have been changed.

From: Clueless
Date: 8.33pm
To: Me
Subject: Re:

Ok

*Me: Finally! Heng I remembered what I studied for once. :p

From: Me
Date: 8.24pm
To: Clueless
Subject: RE:

I let u know ok

Me: I learnt in one of my marketing modules that 'the broken record' method works. Repeat as deemed necessary.

From: Clueless
Sent: 4.47pm
To: Me
Subject: RE:

Im late eater too when is a good day only if u keen

*Me: Obviously if I am keen I would have said when??

From: Me
Sent: 4.31pm
To: Clueless
Subject: RE:

I usually lunch quite late. I let you know k.

*Me: Hope you geddit... Hehe

From: Clueless
Sent: 3.52pm
To: Me
Subject: RE:

When r u free to do a lunch?

*Me: ......