Complaint Review: Sprint Store

I was given false information regarding a contract at Sprint store located at 2350 Central Park Ave, Yonkers, NY 10710.
1) I was told my monthly bill is going to be the same as before.
2) I chose to lease HTC U11. Original price is $29 a month. The store representative assured me that monthly lease is going to be $20 but he did not mention that based on loyalty credits which will disappear if I switch to another plan.
3) I had HTC M9 from the previous lease and Sprint offered me to buy this device for $1 and to keep using it. But Sprint keeps charge me $20 monthly fee for lease it.
Now my monthly bill more on $70. Very nice business. :(