Update:
I go the following response:
Thank you for your response. We are sorry to learn about your disappointment with the compensation you received. This amount was based on the value of the segment that was affected on your ticket and not in relation to the amount you paid total for the ticket.
While we realize this does not meet your expectations, we earnestly hope you will accept this in the manner it was intended. Respectfully, we are unable to offer additional compensation as requested.
We would like to thank you, once again, for contacting us. We recognize we did not leave you with a favourable impression on this occasion but we hope you will allow us the opportunity to provide you with a more positive travel experience in the future.
We appreciate this opportunity to review your concerns.