Immature business processes and worst customer services ever!!!!

I app**** for vehicle finance and got pre-approved for an x amount . I went ahead did some car shopping. I got something on the 15th of August and forwarded all the required docs to the agent who was helping me. She then confirmed she will send the podium and approval to the dealer the next morning. On the 17th, after no feedback from the agent i decided to call her and get an update. She told me there were issues with my application since i'm a foreign national, i then asked her to notify the dealer of the new developments. She then assured that she was working with the credit manager to make it work and she will get back to me the next Monday. Monday came and no feedback, the dealer tried contacting the agent to no avail. I then decided to call the agent myself that's when she confirmed that the deal wasn't going to happen. My questions to IEMAS then is 1. Why did i get pre-approved in the first place? I mean when i did the application i attached my passport not an SA ID 2.When the agent learnt that the deal wasn't gonna work? Why didn't she just update both parties?

Worst customer service ever!!!