Native English speakers, could you please help me with these issues?
a) "I apologize for the delay WITH WHICH I reply."
2. Are both these sentences correct, and do they mean the same:
a) "To this date, I've only been acknowledged receipt of my application."
b) "To this date, I've only been given notice of receipt of my application."
"We acknowledge receipt of your application. We will contact you again once the process is completed."