Very Dissapointing Service

I received horrible service last week from Tumelo at MTN Rosebank. My phone got ****** and i was there to block the sim card and the phone as i already have a contract with them. When i got there he was busy with a client as was everyone else who was working along side him. No one had asked if i had been helped and as soon as he finished with the client he did not come up to me to ask if i had been assisted instead he went back to sit at his working station and waited for me to go to him and ask for help. When i complained about his service he then argued with me instead of apologizing and complained to his colleagues about being tired and wanting to go home. He did not even help me with my problem i had to go back after work and found that they had closed early due to the fact that they had to do stock taking which is strange to me as i feel that needs to be done after the normal closing time of the store. Is that not how its meant to operate in retail? It amazes me how horribly we are treated as paying clients. Extremely disappointing.