Metal shed from hell!

Bought a metal shed from shed warehouse I am disgusted with the quality, it was £370 & is not worth it.
Came via courier in 2 days which is why I ordered it, best delivery time of any company on the web.
They are poor quality merchants! When I opened box panels were damaged, foolish me I erected the shed, worst instructions I have ever seen, said 3-4 hrs to erect, more like 6-7 hrs. Holes in wrong place, metal so thin it just bent as soon as you tried to pick it up!
I know I bought a "value" shed but it is absolutely rubbish, yes I know I should of sent it back, when I unpacked it, my mistake!
But we have just moved into a house with no storage space so needed a shed to put the usual things in as they were under a plastic sheet in the garden, so quick delivery was vital, & foolishly I thought it would be o/k when erected.
I contacted shed warehouse to say their product was not very good & certainly not fit for purpose, reply, not interested came up with excuses that it was my fault for not unpacking it while the courier was still there, yes like everyone does!!
My answer to this company is please spend your money elsewhere they should not be allowed to sell such poor quality products.
I will be contacting trading standards.