called being rude and yet I've been wronged

I received a message from Skynet on the 19th of March 2015 that my Unisa material would be delivered within 4-6 days, today is the 2nd of April and so seeing that I paid a large amount of money to register, I'm entitled to have my material within the time YOU PROVIDED, But no I called to find out where my parcel is, I was told by YOUR CONSULTANT that I'm rude and unbecoming hence YOU fail to do your job, that we pay you to do. Simple question I asked, WHERE is my material I was then told \no mam your material is in ELISFORNTEIN"\"" well there is no point of asking and shouting about your study material because I'm not the one who packaged it\"" OH!!I'm the wronged customer here"