Rude cashiers at Woolworths

Woolworths is very unprofessional and the staff is horrendeous. Why would one branch assist me with my woolies card and another branch which is Sammy Marks on Pretoria have an issue with is claiming my signature is not visible. How do you train your staff. Don't they all speak the same language when it comes to customer service. Rude cashiers who do not even explain why she's freezing my card and has to activate my virtual card. Now i have to do the admin of applying for a new card..