Lied to about promotion

I had the exact same situation with T-Mobile!!! I went into the store was told they would take my old IPhone and give me a new one for free on a monthly credit and it would take 3 months to get the first credit……….. this never happened and when I called and complained a low IQ savage ( You Latisha) had the nerve to yell at me, not let me speak and tell me T-Mobile is not responsible for employees that lie and will not honor what I was promised, I am just another customer who says they were promised something with no proof have a nice day. So I am waiting for the store to open and let's just say the employees who made me the promise will now have a life changing day today. This is a known scam and the employees have no consequences for lies and are essentially being rewarded with commissions for these lies and T-Mobile is fine with it because they profit off of the lies. They stole my phone telling me 90 days for the credit to show but apparently after 14 days you can't get your phone back which is long before you find out you had been lied to…… T-Mobile you are an disgraceful establishment and it's disgusting you allow your employees to lie to customers and yell at them and treat them like garbage when they inform you of the lies. I will  promise you this will cost you and those store employees a lot more than this will cost me.