Should I be held accountable for false information given to me?

It all started when I tried ordering 3 watches. I called T-Mobile and the rep had told me for a sync up kids 2 watch I would need a voice line. So I got a google pixel with the watch. It turned out I didn't need the voice line and I was able to return the phone and not be charged anything. So I call T-Mobile again and ask about the pixel 2 watches and they said I'd need a voice line for them. So I ask about the apple watches and the rep said they are stand alones and I could use my Ipad to set them up. So I order 2 of them. Turns out I couldn't use them. I only opened one and the other was still sealed. I brought them back to the store within the time frame and only got $10.00 out of nearly $80.00. They called it a restocking fee. I tried getting my money back the rep at the store said it wasn't in her power to give me more than what someone on the phone had told her to give me. I leave the store get home and call T-Mobile and ask for a manager. I explain to her that I feel like I have been swindled because I was given false information and now I'm out money. She got aggravated, vocal and snotty and told me that there would be a $10 credit applied to my account.  So I figured I'd submit a complaint but every time I ask how to they ask me why and how they can help and if I'm persistent about it the chat just ends or the call drops….  Am I crazy for thinking I got swindled?