Went to T-Mobile store friday, they sold me a microsim for my nexus 4 and told me to go to the walmart down the street to activate the $30 plan. I tried calling

Went to T-Mobile store friday, they sold me a microsim for my nexus 4 and told me to go to the walmart down the street to activate the $30 plan. I tried calling customer support but they also told me to go to walmart to get the plan. I get to walmart and they tell me I have to buy one of their shitty phones to activate the plan. I call customer support again and asked if I could return the sim I bought at the store, and they said "it depends on the store." Lied to and pissed off customer here. Just ordered a sim online and we'll see how that goes. I'm going to try to get a refund for this card anyway.