Vodacom customer service agent non-responsive

<p>I previously complained about Vodacom Customer service. My complaints were finally well handled by an agent called Thando. While he was helping me and unrelated I founded an iphone previously (about 4 years ago) reported missing. I have been trying on 12 occasions to call him and have sent him messages about this seeking advice on how to proceed reporting and returning the iPhone to Vodacom. He has cut off every call I have made and is totally unresponsive. I have no idea how to proceed and it seems neither does anyone at Vodacom. </p>