AT&T at 12599 Biscayne Boulevard, North Miami, Florida.

Walked in in order to sign up for internet and TV, I indicated that I might only use the services for one month as I was moving, they said that they will charge me $99 for installation plus monthly service cost, after arguing with them, they offered me a $50 visa rewards card in order to offset the cost, I agreed.
A month later, I cancelled my account with AT&T since I tried the Direct TV Now service and it was really bad. At this point, I contacted customer service in order to find out when will I be getting my $50 card, they indicated that since I cancelled the service within 90 days, I'm not eligible to receive the card. After spending 2 hours and talking to 4 different departments, I understood there's nothing to be done, and AT&T will not be sending me the promised rewards card.
In addition to that, the gifted salesperson in the store indicated that I HAVE to come back to the store in order to sign up for Direct TV Now (not true) after trying to upsell me into a tv package I don't need (we went through the channels we need).
In conclusion, the retail store is a bunch of dishonest scammers, they are useless as everything could be done online with better prices and better disclosures, and AT&T customer service won't stand behind the retail store representatives' word since I obviously have no proof of it.