The worker lied to me to not let me return items. ...

The worker lied to me to not let me return items. Then with one of the returns i did an exchange for a 45 dollar iteam for a 25 dollar iteam but then she said i owed them 3 dollars. I've had problems with this employee before but this time I'm going to call corporate. The girl after also wasnt able to return her iteam because it was a dress. She told her they couldn't return at the store and has to send it back. I know that was a straight out lie.