Assurant return damaged device package Empty!!

I have been a customer of Tmobile for the last 16 years and have filed 3 claims 2 damaged phones and 1 stolen. I have paid $4,608.00 in total for insurance on my devices. $42,240.00 for phone service. 
I am beyond upset and no is not even the amount I am erroneously being charged by assurant through T-mobile. But is the scam that assurant is able to get away with! 
This is my story, I accidentally damaged my phone in September and filed a claim with assurant for this phone to be replaced, my claim was approved next day and I received my replacement. I sent the damaged phone back to assurant on September 14th and received a notification it was received September 17th in their York PA warehouse. I received a letter in November stating phone was not received, so I called assurant and their Rep stated that they had actually received the phone but the package had not been scanned in. Then I get a charge on my T-Mobile account in December stating assurant never received their damaged device. I call assurant and again I am told the device was received but the packaged had not been scanned. I wait a week and call again and now another rep is telling me the package I sent was empty and it was received empty, so I ask why would I claim a damaged phone and then keep it. Why would I send an empty package and taken the time to tape it and mail it and track it just so I could be told package was received but it is empty so you have to pay full price for a refurbished phone replacement. This is definitely a scam and there is no way that our packages arrive empty. It makes no sense my phone was literally in pieces due to car accident who would steal a damaged phone that had no use. Please T-Mobile investigate assurant and please find another insurance provider for your customers.