What has happened to Good Customer Service?

On many occasions I go to 2 or three preferred Shoprite stores. Now I understand that in the retail sector there are much to do and staff may be overworked, but in my opinion a person can only be overworked if you do the work that was set out and may even go beyond what is expected. That is not what I experience at my preferred stores. These stores are preferred by me because of location not customer service. I find that certain stores keep stock according to the area they are in and the locals of that area. I feel that I would like to walk into any shoprite store and find the same stock no matter the area. So that makes me an unhappy customer. Also the staff offers no help because they don't seem to notice when a customer needs help. At certain stores the stock is packed in access on floors and infront of shelves. The customer cannot see the price of products and may fall or hurt him/herself while browsing. The prices of Shoprite may be good but now customer service falls short.