UNFAIR!!!!

bought myself an Note 9 for my birthday when i got home inserted my sim it showed no sim so i thought theres something wrong with my sim card and went to go buy a new sim the same thing happend so i took my phone back to samsung in clearwater mall the Technician took the phone and switched it on inserted his own simcard and again no sim so he told me he needs to reinstall the software but he needs to charge it for a bit.. i waited for an hour when he was done he tells me its Samsung fault i need to take the phone to samsung in revonia or to Samsung in mall of Africa so i took the phone at mall of africa the technician took it and checked it phoned me back the next day telling me the battrey is burnt. and theres damp in the phone.. i havent taken the phone out of the box but its my fault .. HELL I TOOK THE PHONE BACK BECAUSE IT DID NOT READ MY SIM NOW ITS BURNT R18 000 GONE THATS NOT FAIR