bad customer service.

i got a call from your call center collection and i want that call to be listened to. my account is in arrears and i just got back to work when your collections consultant called me at work and requested to talk to me, i advised my colleague that i'm on a call with a customer as i also work in a call center environment, and requested my colleague to take a message. My colleague comes back and advises me that if i cant take that call the person wants to speak to my manager. I had to quickly finish with the customer i was with and go and take the call, only to find out that its woolworths consultant asking me when am i paying, i mean since it was hard for her to get hold of me, she should have firstly asked me if its a convenient time to talk to me , before she told me all that she was saying, and when i asked her about my manager and requesting to speak to me she was shouting at me as if i owed her the money and damaging the brand of woolworths. I demand to hear from woolies about this