Tmobile kiosk costco Merced California

Purchased 3 devices during 2015 black Friday sale. 2 Samsung Galaxy s6 rebate stated 250 Costco cash card for each phone and 25 cash cards for each device. Waited the full 14 weeks to finally receive the three 25 cash cards but nothing else. Went online like directed to Stuart Lee rebates and file claim to no avail it was the most incompetent website I've ever experienced with no human contact and an automated response. Called original store to ask for help didn't get far. Went to local store and customer service was a complete joke guy stated there were no rebates in those amounts during the time, insinuated I was lying about all of the amounts. I wouldn't leave so he eventually did his job to look up the rebates and found, ta- dahhh alllllllll the rebates I stated were there in bold. He then claimed he didn't know how to do an escalation for the cash cards to come back and see his manager a few days later. Glad to know ur well trained in your position? So I come back and am hit with the same hostility from the manager Jesse (I have severe anxiety so u can imagine what a nightmare this all is to beg for my money back.) Once again he finally agrees to do his job call the original store and ask for the 250 for each phone to be escalated. I heard these words ok. So he says it's done I'll receive it in the mail. No he can't tell me when I'll expect them....lol I received them a month later at 225 each. I can't believe this! when will the madness stop? I go back to the forsaken store talk to a new guy because the other guy (not the manager) refuses to acknowledge me. He then is the literal worst experience and actually argues with me that I'm wrong the amount was never 250 there were never rebates for the 25 cash cards off any devices, then says well u got ur money the 225 plus the 25 cash cards equates to 250. I explode and tell him all of u are treating me like I'm trying get to steal money when this was in ur black Friday sale!! I just want my money back I'll never do business with u people again. So he calls the original store to go ahead and complain about me in the face to the manager who agrees that I'm already up to date with my amount and they can see if 'they' can escalate my request. The ridiculous part is nobody ever disagreed about the 250 amount due until this last guy, who mentioned that their rebates papers changed in November. So all in all this is the worst scam ever and I'll be contacting both stores dm to make sure they understand the importance of customer service and lack thereof. I can't believe how I was treated. All over 50 bucks... why do they have a job if they can't even do it right?