Bigfoot refusing to pay for items lost in transit

I couriered a parcel with bigfoot Express frieght on the 5th October 2021. The vehicle carrying this parcel was subsequently hijacked. i understand that this is outside of the company's control. Its the ensuing chain of events that is pathetic.

It took Bigfoot 2 weeks to notify me that my parcel is lost. I then submitted a claim form on the 20th October, along with the requested invoices, and this is where the nightmare began. Bigfoot then just totally ignored me and my weekly emailled requests for feedback. on the 8th of November i eventually got hold of the customer services manager Chris Bemiah. Who undertook to look into the situation and get back to me..... he did not. i then mailled him on the 16th November requesting feedback. I was then cc'd on an email to a subordinate where this person is told to look into the problem. Still nothing happened. So after many telephone calls which went unanswered or call back requests with reception not being comp**** with. I eventually got hold of Denesh Singh the COO. who undertook to get the situation sorted...... he did not. It is now the 15th December and I still have not been refunded for my lost items. I have Just spoken to Chris Bemiah who is rather blaming the East London branch and the 3rd party delivery company. Which all has nothing to do with me. Chris then advised i call Denesh and take it up with him. Denesh rejected my call.