Bad attitude and lack of customer service

Went to East gate as I thought the shop was bigger, as we are about to buy, the lady does not greet but have the audacity to ask if I want a bag, then I ask why are you not greet, oh the attitude on her face and acting saying she did greet, I’m but I wouldn’t have greet if you did, meanwhile she’s talking to her friends on the other till that she can’t wait to go for tea time at 17h00 but yet had attitude towards customers and those conversations they should be held while customers are not around, I told I will report her and ask for the manager she pointed it to me with confidence that there is nothing the supervisor can do. As I went to the supervisor to explain about the level of service I received, she just showed me the email address on the slip with the contact number that I must call surely, with zero interest on wanting to know what happened. No customer service at all and the attitude of rolling her eyes without even apologizing. Her attitude was giving me that even if you can report me there is nothing you can do. So I called to speak to the manager as the supervisor also lack customer skills, I even wonder how did they get those positions since more training needs to be done on how to handle such matter. My day was ruined after I left the shop based on the experience I received