Lied to about phone charges.

My wife and I went into the store on February 22 with our 2 kids in Lenoir City TN. We wanted to review and plan and see about a new plan. The two ladies working told us about the promotion and we could upgrade our phones at no additional cost a month. We upgraded our phones and changed plans to lower our bill. When looking at my upcoming bill it is actually $30 more a month than I was paying before. I went to the store today to discuss and hope to get it fixed but was told what the problem was and I needed to call 611. So while driving home I called 611 and tried to discuss with the rep that answered and he said he didn’t see anything wrong with our account. His supervisor got on the phone and said we are on a contract and nothing can be adjusted. We are being charged $22 a month for our phones, which was told no monthly cost. Our bill is $100 more a month then what was agreed upon in store. This is horrible customer service and right next door to your store is a Verizon and AT&T. James at the store told me to go talk to them if I didn’t like how TMobile did business. Would really like to speak with someone about this. I have been with you for over 5 years.