Fenesta — Installation stalled ref no [protected]

Dear Team Fenesta
I regret to inform you that the installation of the windows with the above reference no is being partially stalled. The window handles have been mal positioned due to a blunder committed by the site engineer who failed to notice the grill design.
An attempt has been made to install the windows in a fashion that is both unaesthetic and highly impractical.
I tried to discuss this and offered some solutions as well. However, the engineer is not ready for either accepting responsibility or to solve the issues. This is very unbefitting of a company like Fenesta and is extremely disappointing.
I tried calling your toll free number- however there is no response.
Kindly call me in person on my phone number as per your records
for complete details. I hope someone responsible will reach out to me from your end.