Product: Prepaid card

received a voicemail ( announced as a call from XXXX ) that my current XXXX discount was ending, and that I have to update my status with billing. I called the number they gave me in their voicemail. 
I was offered some pretty different options, but basically they said XXXX and XXXX are partners now. So XXXX wants to promote sales, and if I use a XXXX credit card, XXXX debit card, or XXXX gift card-I can pay a whole year up front ( at a rate of $ XXXX ). The following year I could use my other accounts to pay for my bill, ( at a rate of $ XXXX ). 
The other option was to sign a new contract and pay $ XXXX for as many years as the contract. That $ XXXX sounded really good. AND if I used my XXXX  gift cards to pay within the next XXXX minutes, I would also get a FREE {$100.00} pre paid Visa card. 
So of course I opt for the XXXX no contract pay with XXXX gift card. And the guy who I was talking to, " XXXX '' was so reassuring and patient and professional. He told me there would be a 1 time fee of {$2.00} to my XXXX account for the service change. And sure enough, that transaction went through. And showed up on my XXXX bill. I also received an email confirming it. FROM XXXX -- the real XXXX They also told me to keep the amount of the gift card under {$370.00}, so I bought XXXX gift cards and put {$350.00} on each-cause why not have a little left over. 
So an hour later, when I got a text from XXXX saying there was a payment problem, I called the number they listed and was told that I had messed up the transaction by putting too much money on one of the cards. and that it had already been processed. and since target gift cards are not refundable. I lost my first {$700.00}. The next guy I spoke to was " XXXX XXXX, employee # XXXX '' who said he was so sorry and it's an issue a lot of people are having. They'd refund the money via check, but in the meantime, I'd have to buy another set of cards. Which I was upset about. but he convinced me it would be fine and there would be a tracking number when I completed the next transaction. I'm so stupid. I spent {$660.00} the next time. XXXX cards, putting exactly {$330.00} on each card. 
That didn't go through because he couldn't verify that I had purchased these at XXXX. And after a lot of arguing from me about getting my money back, he was very rude and told me once again that he would be sending a check immediately for the amount. Also-the first time he promised me my {$700.00} PLUS an additional {$100.00} for my trouble. And the next time, the {$660.00} PLUS an additional {$100.00} for my trouble. Total {$1500.00}. So I have to buy another 2 gift cards each $ XXXX {$660.00}. But this transaction finally works NOW I've spent {$2200.00}, with the promise I'll get back {$1500.00} PLUS the {$100.00} Visa. 
But! there's a problem : He tells me, now XXXX won't honor the amount, because they can only cut checks for {$3000.00} and unless I pay the difference, I won't get the check and it's waiting at XXXX in XXXX. 
And my whole world crumbled because I realized I just lost RENT for a whole month. I read the back of the XXXX gift card which says they're only accepted at XXXX!! I told " XXXX '' it was a scam and I want my money back and he started yelling at me and hung up on me and then sent a text saying they would charge my card for {$1000.00} if I don't respond. I have contacted XXXX, XXXX and my Bank. HELP!!!! What can I do!!! I want these people to pay back what they owe!! 
XXXX will not cancel these charges and I have lost {$2200.00}