Translating manually the letter above in french

Dear....
Please accept this letter as my formal apology for the item ...............that you purchased online at ..... in my shop ............
 
It was not my intention to cause any damage or inconvenience. In retrospect, I believe the situation resulted disappointing on your side. While this is by no means an excuse for my behavior, knowing the cause will help me guard against future mistakes.
 
Again, I am sorry for what happened. If you would like to continue this conversation, please feel free to contact me , 
 If this solution resolves your problem, I would greatly appreciate it if you would consider removing your negative feedback . As a seller, I pride myself on my responsiveness to any issues that come up and by doing this it will indicate to other customers and Amazon that I care about the products I sell and my customers’ experience. I’ve listed instructions below. Thank you for your consideration and – most importantly – thank you for letting me know about your dissatisfaction so I have a chance to resolve it. - See more at: 

Best Regards