Business ProfileforArchTelecom

I went yesterday to upgrade my phone and the representative on ************ at ********* told that I can trade my iPhone 8 for and iPhone 14. I will receive a credit of 600 dollars for my iPhone 8 with a remaining balance of 130 because of the cost of the iPhone 14 (total cost $730) and a free ******* Tablet. As a result of that, they will add about 5 or 10 dollars extra to our original plan $130, so our monthly payment will be between 140 or 145 monthly, Today we received a text from ******** thanking us for the additional line to our plan. I called to customer care and they explain that additional line has been added to our initial plan and we need to pay 20 dollars monthly plus to our plan. When I came back to the store, the representative wasnt there. The store manager (******) explained to us that ******** can still not see the plan and he couldnt even confirm with us the 600 credit back that was offered to me yesterday for the representative. He said that for the first 2 billing cycles we will pay about 160 dollars and if we continue receiving that, Then they will fix that. However, now I cant believe that will happen anymore. First because an information has been hidden to us, the store manager didnt want to write the credit that has been offered to us, so we probably ending paying way more, and after reading the complaints here I even more scared than before. I bought yesterday a case for my new iPhone 14 and a screen protection. I paid for data transfer and activation of the tablet, both cost me about $ 200. Today, I wanted to return the devices and the manager said that I have to pay extra $110 for the returns. So, at the end I will ending paying $310 and not phones. Finally, if I want to activate my iphone 8 and transfer the data, again, I will have to pay again. What kind of people do that? What kind of business are you running? I really dont know what to believe or to do with your company anymore.