I have a shrub in my garden that looks rather poorly. It was there when I moved in, and is looking ugly. I'd be most pleased if anybody could help me identify it, and tell me what is wrong with it, as I'd like to know if its worth trying to save.

The shrub around 5ft tall, with woody stems growing from the base. The leaves are all twisted and scrunched up, and the flowers (I think thy are meant to be spear shaped) are icky and brown. I can't see any sign of creep crawlies.

Attached are photos. Apologies if they're not all that clear, my camera refused to focus properly.

Thank you very much for your help!

Update: I think it's a buddleia, though I'd still like to know what's wrong with it