unhappy customer

I was at pep daveyton Cellphone counter during the weekend. their service is very poor. what happened was that there was only one cashier at the till. n the que was long. i was there to withdraw money. while i was standing in the que the was an old granny standing trying to balance herself with shelves, for the fact that she is old n not looking well in terms of health. i was maybe customer number 5 when i notice her. trying to stand by shelf. the que was moving too slow until i become the 1st costomer n i realizes that it is not good at all. i then ask a cashier and a supervisour to give the old woman a chair to sit. i even said to old woman that she should go when they call the next customer and insist to wait. i ddnt like the way they responded to me when i asked for the chair. I said:"Bafethu ninjani, is there any1 who can offer n old woman a chair ?" instead their answer was. "You dont even greet us u just giving orders as if this is ur house." everyone standing on the que started mumbling asking that a plea is worth somebody's life. wen i asked for a chair i wasn't asking in a bad way n i ddnt think i had to plea 4 what they should have had done as part of customer service. i am really not pleased because even wen i approach the counter they treated me with the attitude that i talked too much i never received a good customer service. i asked for the names of the two ladies who give me **** of ******* instead of customer service. i will like Mampho Xaba and Dudu moyana to be dealt with accordingly if those were their names n i am requesting a proof and a feedback regarding this. i will never set my foot to DAVEYTON MALL PEP STORE EVER AGAIN. my contact details are ***