Security issue

I had such a bad experience in the shop with a fellow shopper , This person was drunk and abusive , I called out for security to help he didn't move an inch , none of the staff members intervene , I am a 56 year old partially disabled person , The fellow shopper and her friends were youngsters around 20 years old , Don't we get protection in the shops our is security and staff member just there to cash up and check bags