Putrid customer service

We, me and my mom, recently visited the new Jet store in Canal Walk and our experience and the service from the staff was horrible. Firstly, one of the staff was eyeballing my mother the entire time while she was looking at garments and he made her feel very uncomfortable and she felt like he had a problem with her opening the garments when she checked the sizes. When she realized that he was looking at her, she told him that she did not know how to fold it the way it was previously folded, he then grabbed the item and rudely threw it aside. This happened twice, we caught him agitatedly staring at us as we continued our shopping. Secondly, whilst at the till, I was told that apparently you can not put on-sale items in a lay-by, I don't understand why not since there is no notices to say that you cannot do it. I know certain stores have a no return policy for on-sale items but it's the first time I am hearing that I cannot lay-by these items. This specific staff member made me feel so embarrassed by loudly announcing this and I feel she could have and should have said it directly/softly to me and I had to carry everything back and hang it up myself. The same staff member and her colleagues then had whole a discussion about us wanting to do the purchase in a language we didn't understand while we were standing there and I found that very rude. I do not know if it was a real rule or if they did not want to assist us because it was close to closing times. It is unlikely to have experienced the type of service we have received from the staff members, it is quite the opposite of professional customer services as we expected better from everyone on duty. I'm quite dissatisfied and would like this to be taken up with management of the store. We were left startled and quite speechless in that moment.

Regards A very dissatisfied customer