Based on all the info on the post, I created a little script to make the whole process easy.
@ECHO OFF
netstat -aon |find /i "listening"
SET killport=
SET /P killport=Enter port:
IF "%killport%"=="" GOTO Kill
netstat -aon |find /i "listening" | find "%killport%"
:Kill
SET killpid=
SET /P killpid=Enter PID to kill:
IF "%killpid%"=="" GOTO Error
ECHO Killing %killpid%!
taskkill /F /PID %killpid%
GOTO End
:Error
ECHO Nothing to kill! Bye bye!!
:End
pause