BOGO buyer beware

Hello I think I am currently getting scammed too. I went to a t mobile store on Oct. 23rd 2020 to try out the Bogo Deal you Buy ONE Samsung or IPhone and GET ONE FREE. I spoke to the salesperson about this deal. I continue to tell the salesperson that I wanted 3 phones and trade in my nephews Samsung S20 from another company. The salesperson told me that I would need a down payment which I provided along with the phone. The salesperson stated that the monthly bill would be under $200 dollars monthly. My complaint is that my bill is a extra $30 a month when it's supposed to be $175. Where's the extra money going? Secondly, why am I paying for the 3rd phone when it's supposed to be FREE? I have been calling since I have gotten these phones. I am highly upset. It seems as though T Mobile does not care about their customers. This week a supervisor's head supervisor was supposed to give me a phone call back. It hasn't happened yet. This morning I spoke with a representative that stated she saw in the computer where the phone is supposed to be FREE. I have paid over $3000 for phones, services and fees. This is just not acceptable T-Mobile. Please contact me.