No one can tell me where my shipment is

Shipped two movecubes from the UK to South Africa. For the last month I’ve been on the phone to their call centre, who are completely clueless as to where my things are. On multiple occasions I’ve spoken to them more than once in a day, with each call centre person saying our shipment is in a different city. It’s been over 3 months and no one can tell me where our stuff is! Apparently it’s in South Africa. Can someone please provide some basic customer service and tell me what is happening!