Rude staff and the Store manager

I visited the store for a cellphone contract on Saturday the 25th, the system was offline, I filled it the forms and the sales lady promised to call me with feedback and and she never did. I called and she confirmed it was approved, Sunday I went in to collect my phone. I got to the store the codes for payment was incorrect so I had to wait for 45min still the transaction was unsuccessful, when I brought this under the attention of the supervisor she said there's nothing she can do, it's not her problem. I requested to be contacted by the manager when everything is ready but no one called. I went back Monday brought this under the store manager's attention and he said that's not his problem that I should wait in the queue like everyone else. As a manager he should have better principles of customer service, I'm so disappointed in Game