Looking on the internet deeply has found these results:

You asked me to give you a call once I was free is the most popular phrase on the web.

You told me to hit you up once I'm free 14,000,000 results on the web	You asked me to give you a call once I was free 1173,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
You told me to hit you with the car. Basically, he told me to hit the road. ! You told me to hit you with the car! You told me to hit you! You told me to hit you! Your boy Ressler told me to hit the highway. You told me to hit you!	WALTER: He... He asked me to give you something. She asked me to give her a call, but I'm taken. You asked me to give you data, to tell you when we were running the experiment. A woman down at the rec center, Rachel, asked me to give you a call. Manny's on his way, asked me to give you a call. You asked me to give you a little space, Jeff. You asked me to give you the figures for the other countries. he asked me to give you a call. I'll be right there.

You told me to hit you up once I'm free

14,000,000 results on the web

You asked me to give you a call once I was free

1173,000,000 results on the web

More popular!

WALTER: He... He asked me to give you something.
She asked me to give her a call, but I'm taken.
You asked me to give you data, to tell you when we were running the experiment.
A woman down at the rec center, Rachel, asked me to give you a call.
Manny's on his way, asked me to give you a call.
You asked me to give you a little space, Jeff.
You asked me to give you the figures for the other countries.
he asked me to give you a call. I'll be right there.