need help with contacting TMobile corporate office

So here's my issue maybe someone else has had It and knows where I should turn, so last year around September or so I got my two week old Apple Watch series 7 45mm stolen, I filed the usual BS paperwork paid the $150 deductible then I get the tracking info on my watch, watch never comes, watch never comes BUT says delivered.  UGHHH So of course UPS said it was handed to me >'Mr. Adler'  And at this point I'm becoming Increasingly more pissed off and this is why and It's not just because of bad customer service it's because here i am now with a watch payment, data plan & Insurance, it adds up.  So, finally we agree on sending me the replacement and I had it sent to my friends brothers house in the sticks so YES I finally got it and life goes on, fast forward to January and I am at a restaurant and bar and I turn to say hello to a friend and someone got me for the watch that I took off while I was enjoying my cocktail, yes I should be more careful BUT at the end of the day I have and pay for Insurance so I should not have to deal with this.  Ready for the second part…? Pay attention It gets confusing on 1/13/2023 I get in touch with T-Mobile to get the warranty process began on my now second stolen apple watch  and of course you know the drill, pass the buck as many times as you can and hope It does not come back to you  LOL LOL :-) So I reach Assurant now and file my warranty replacement pay the $150 and life goes on, well no it does not, Assurant denies the claim wanna know why..? Fraud, YES you read that correctly they said in so many words trust me, then I call T-Mobile back and after an hour she tells me this is why they denied it and It's because Assurant when they filed the complaint somehow someway they used the IMEI from the watch that got stolen, so OK we have a reason now we need a solution, T-Mobile gets on the phone with me and we do a three way call to Assurant (not that kind of three way) SICKO  JK JK JK LOL LOL I needed a laugh sorry, all kidding aside they finally file a second claim and I don't know what she gave him but she found the watch (My watch supposedly) the IMEI I needed, so It finally this looks like a simple mistake right and It will be resolved, no way Jose it's far from resolved, so 1st claim denied from Fraud! the 2nd claim with an updated IMEI supposedly DENIED guess from what…? You guessed It right, FRAUD! So now guess what I have a third time to do this so I my as well get it done, ok we finally after three excruciating days of back and forth with T-Mobile and Assurant they now find a 3rd IMEI ???? so I can file a third claim, well guess what…? Denied, I've now had enough and need a break, so that's what I've been doing and god darn it I'm exhausted, so now back to this, I still am paying for the watch, data plan, insurance.  with absolutely no one helping me, I've scoured the web looking for ways to file a complaint and It keeps taking me to a site where they want me to pay, then some useless sites THEN of course sites like this sponsored by T-Mobile.  I'm at a dead end folks and could really use some guidance, any thoughts..?? 

Thank you so much for taking the time to read this novel, I hope you made it to the end so I could shed light on this huge problem so others don't fall victim. 

Again, any ideas will be put into play, Id take anything.

Jason Adler