Houseplant identification

I dint know what this plant is. I rescued it from an empty office at work. It flowered 2 years ago, small white flowers, a bit trumpet-shaped, but it didn't flower at all last year and hasn't done since. When the leaves die they go black and dry out.

 

Welcome to Gardeners Corner

No idea, but i'm sure someone will know

 

Hello and welcome. I also have no idea I'm afraid, but as Zigs says, it wont be long before someone that knows turns up.