Have lost $600 in Tupperwre and have now been left

I had a package being delivered to the wrong address, I contacted TNT before the pakage had been delivered to the local depot to change address took responsibility and was more then willing to pay extra cost, was told they had the package it had been stopped from being delivered, then heard nothing rang back again and the package had been delivered to the wrong address and was gone , rang TNT a large number of times and got know we're was told I would be reissued with my tupperware and TNT would cover the cost! This was nearly 3 weeks ago have been told nothing not informed of anything and have had to refund my very disappointed customer out of my own pocket I am disgusted with thier customer service and the whole situation and will be take this further to fair trade