No feedback on phone repair

In December 2015 my iPhone 6+ died. I went to Autopage Northgate to report this and was told the repair centre is closed till mid January. On 13 January 2016 I handed my phone in at Autopage Northgate. I was told it will take 4-6 weeks to repair but I will receive regular updates. On 9 February 2016 (almost one month later!) I received an sms stating that the Repair Centre now received my phone?! Since then nothing. Last week I went to Autopage Northgate only to discover the branch has closed. I called the Call centre. After several frustrating hours of getting through to the wrong department and being cut off, I finally spoke to someone that advised me that my reference number is incorrect I need to find the phone's id number on the box. After more attempts to get through I spoke to someone that said they do not need this number. My phone was sent to Vodacom's Repair centre and they need to send a message to them to get an update on my repair. I will receive an sms. Till today, no sms. REF419006. Were is my phone?!