Calling batch script from another batch script

Ok I have found a few questions on this, but each are saying make sure the use CALL and exit \b or goto eof in the 2nd bat file but for some reason I am not getting this to work, I have tried both, the batch file exits every time after executing the first call statement:

batch file 1 (myscript.bat):

:@echo off
del files
dir /B /O-D | find "test2" > tmp
dir /B /O-D | find "test3" > tmp2
CALL head 1 tmp > files
CALL head 1 tmp2 >> files

head.bat:

@echo off

if [%1] == [] goto usage
if [%2] == [] goto usage

call :print_head %1 %2
goto :eof

REM
REM print_head
REM Prints the first non-blank %1 lines in the file %2.
REM
:print_head
setlocal EnableDelayedExpansion
set /a counter=0

for /f ^"usebackq^ eol^=^

^ delims^=^" %%a in (%2) do (
        if "!counter!"=="%1" goto :eof
        echo %%a
        set /a counter+=1
)

goto :eof

:usage
echo Usage: head.bat COUNT FILENAME

Execution:

C:\Users\ots>myscript.bat

C:\Users\ots>del files

C:\Users\ots>dir /B /O-D | find "test2" 1>tmp

C:\Users\ots>dir /B /O-D | find "test3" 1>tmp2

C:\Users\ots>CALL head 1 tmp 1>files

C:\Users\ots>

How can I get it to run the second "tmp2" Call line?

Thanks!