Cashiers are the most unprofessional rude people I have ever experienced

This is probably the store with the most unprofessional and rude staff - specifically talking about the cashiers. Maureen Kunena took the cake today. Not only did we wait for a very long time after she made error after error with the customer in front of me and had to call the supervisor twice. In the MIDDLE of "serving" me, she decided to leave her till. I couldn't go because I was busy with the payment. When I asked the packer where she disappeared to, I was informed that she went to the restroom. Now, I understand that we all need the restroom from time to time, but heck - how about a "sorry, i will be a few minutes" or finishing the transaction before you just disappear.