pathetic

I went to an MTN Brooklyn Mall store for a new line handset on Tuesday. Wednesday I was told that I am approved and I can come collect, same day later on I was told that "sorry we do not have it and will come back to you" I followed up till date and nothing has come forth. How can you sell something you don't have? you are selling a lie... How is it going to be when comes to billing then. Am I making a right choice here? ***