Out Of Stock - Bad Customer Service

I took out a Smart broad band wireless 10GB including device for R299 on 2015/11/05. At the time, there was no stock so I was advised by Simone she will give me a call within a week to come and collect my devise. I've been going back to Telkom several times and I keep getting told they will give me a call. I've never received a call from November. I returned to the store in January 2016 and spoke to Stephan Nel(Manager) who advise he will escalate my query to his regional manager because the device is discontinued.This is not my problem that the device is discontinued. I've been paying for the device so I expect to receive my device. To date, I did not receive one call. If this is not sorted I will be posting my complaint on all social Networks.