Dissapointed

I currently have an account with FNB and I've been banking with them for more than 20years. They offered me a smart device (phone connexis x1) ,I took it under a 2 year contract , it's only been the first year and my phone broke so I went to take it for repair only to find out that there are no parts available for my phone(They are no longer manufactured) but when FNB gave me this contract I was not told about this and even they didn't know upon giving me the phone , they should have told me as soon as they knew so I can either terminate my contract or get an upgrade. I've been trying to communicate with the consultants over the phone and I literally spent more than 5 hours without getting any help what so ever. I know that screen repairs are not under warranty but what and where can I take my phone now since there are no longer parts available. Mind you that I am still paying for this phone and it's just blankly looking at me. I took the contract trusting in FNB but going forward I don't think I will be able to trust in them in terms of smart devices. I have been offered a new device but I'm still very skeptical on taking it because what if the same thing happens.