Review Theft encouraged by this shipping agent

Do not use this shipping agent.
All my valuable possessions were stolen before they had even reached the warehouse in Durban. Two Indian males came to collect and pack the items. They placed the valuable silverware in the top part of the box, then they clearly marked the box on the outside with the word “silverware”. The box was opened in the van en-route back to the warehouse in Durban. I know this for a fact because that section of the journey, from its pick up point to the warehouse is the only time these individuals are not supervised or filmed on CCTV. When my possessions (what was left of them) arrived in the UK, the box had clearly been opened and resealed, was half empty and filled with the same paper that they had used to wrap other items. The clearing agents in the UK confirmed that the clearing was a "Closed Box" clearance.
I immediately contacted the Durban agents, who not only ignored my emails and avoided my phone calls, but when I called the Branch Manager, Mr Stephen Goulding, he got angry with me, told me that there was nothing he could do and he put the phone down, cutting me off. Such a nasty individual. That was the last contact I have had with anyone in that company. They were extremely unhelpful and unfriendly, have not responded to my request for an investigation and have avoided my calls .(International phone calls each time I might add).
I asked for a police docket for theft to be opened and an investigation done, but this was ignored by Intertrans and their Insurance agents. I was told by their insurance company to conduct my own investigation. (From the UK) So basically the company is endorsing the theft. “help yourselves Intertrans employees, these suckers are moving overseas and there is nothing they can do about it.”