Unprofessional Service

I have been approved for a device on the 18th of October, they promised to deliver it within 10 working days, after those days I called, a consultant told me that they were out of stock, they were gonna get the device on Friday. This morning I called them again, I have spoken to Chantelle, she told me that they are out of stock, then she told me someone else is going to call me, while I was speaking, she dropped the call