Bazile most furniture will come flat packed, if you are not able to do it yourself, hire a local handyman for a couple of hours to assemble for you.
Furniture assembled from store is normally quite expensive and still then assembled on site, getting all the pieces through doors and up stairs is just not practical.
I bought some really nice shelves and side tables from the range we did have to assemble them but no probs and the customer service was very good when they sent one of the wrong colour ,they reordered and refunded delivery money .