Assurant robbed me for my money.

I am so upset after being a customer for ten years and paying for insurance on four phones a month my brother broke his phone. I only owed 150 on it so I decided to utilize the insurance. Since I stay out of state my elderly mother put the phone in her building locked outgoing mail which only the post office has the key. Her security guard whom is 24 hrs saw the postal worker obtain the package but somehow it has not been scanned at the post office and assurant does not have it. Now mind you it was placed in the packaging they sent.  I call the post office I get a email stating that they have had issues with assurant about bar codes scanning differently from the number that is viewable by humans and for me to contact assurant. Which I did and was told there is nothing we can do. I have proof of the locked box and a witness it was picked up. Still both the post office is saying oh well we can't locate it and there is nothing you can do. Assurant is saying oh well we don't have it and T-Mobile is like we have nothing to do with it. I even asked if I could send their phone back and just take the lost on my phone and was told no you will be charged 1000.00. They didn't even put nothing but 100 insurance on the package. Then the 1000 will be added to your bill. If I purchased the phone over a 24 month period how do they think I can afford to pay 1000.00 on top of my bill. Still they not even trying to work with me knowing 1. I never utilized the insurance as long as I been a customer 2 I have paid for this insurance for years 3 that I don't have that type of money. It seem like they are just trying to get money. At this point I don't know what I'm going to do I did cancel all my insurance from each phone because I will never used them again. And I am really considering going to another phone carrier after this. I have filed a missing package with the post office, contacted postmaster and attorney general for my state.  This is just crazy and no one cares because they don't have to pay for it.