Thank you for bringing this to our attention.
We do offer a next rainfall guarantee with all of our gutter cleanings and would be happy to extend this to your situation if your cleaning was done this year (2014).
Unfortunately I don't see a record of any completed cleanings with anyone with the first or last name Thomson in our records.
Please contact me personally at info (at) niagarawindowwashing (dot) com so we can take care of your back gutters. In addition I would be happy to extend a $25 credit on your account to be used toward future services for the inconvenience.
Niagara Window Washing