Pep stole my package

I sent a package at their branches on the 2nd of December it's worth R6000 and they tell me that it is lost and it has a. Monthly subscription of r650, they tell me they can't assist me because it was nit insured, but upon sending the package I was not told about insurance, and worst of all they tell me it's my fault I should have went to their website and read about terms and conditions. I don't know what to do