Call Center Agent Not Talking and pretending as is the signal is bad:(

I m really disapported at the level of bad service i m receiving from this company- i have placed an order for F-LTE uncappped and paid R1000, and still havent received the order. When i call the call center they put me on hold for 30 min and when i finally get to be number 1 on the que - the urgent pretent she cant hear me while i can perfectly hear everything and then she is not doing anything.