Bad service

I was at Woolworths Northgate today, 4 September 2017, 13:47. Someone was fixing the shelf, leading to the tills. I nearly collide into the shelf, with my trolley that was left unattended to and no warning signs. I spoke to Ntswaki Mothabeng to please ask someone to put a caution sign. I got not response or even a greeting from her. I asked her for some acknowledgement or smile that she heard what I was saying. I also complained that there was a queue and only 2 tellers to assist. There were no managers available, apparently they where all in a meeting. I told Ntswaki was was going to complaint to Head Office and then I got a response from her, then the person that was fixing the shelf appeared. Not acceptable.