most times when i have to wrap around something complicated, like a door handle that's hard to remove on my own, I inform the client that it'd be best if they removed the handles themselves prior to my install. They save money not paying for our time to brainstorm in the field, you save yourself a headache and potentially destroying their property, and usually their own maintenance guys know how to pop those things off/on in a jiffy.
although this could have been done without handle removal... same way car wrappers do side-mirrors (and how I do thermostats on wall murals). Make a proper measurement and cut out a smaller hole than needed, start your hinge at the obstruction while stretching the hole as you apply around the handle, and fine line trim it when the application is completed.
----------------------------------
but back to the question, on whether you're wrong or not... I can't say without seeing the final product. "Customer is always right" is usually a standard for the service industry. And customers, more often than not, are picky when it comes to comparing drawings with finished product... and i assume that there weren't patches/seams discussed in the design/planning process.
