Must agree with Teegee on all counts, that looks like an ex-gooseberry bush. You will have more success if you get another and plant it around October/November when it's dormant.
It looks like that pot isn't filled with soil, it may be a good idea with your next one to fill the pot to within an inch or two of the rim, and make sure that you don't use a soil that holds the water too much, they don't like being waterlogged at all, so if you've got heavy soil, mix in some grit and make sure the drainage is good. Better still, plant direct into the ground.