Everything!
Sofa and chair bought in May but only sofa delivered. 2 months later we received the chair which was a different shade to the sofa. Homeserve rep was sent out and declared the difference to be "within acceptable tolerances".
We then discovered that the sofa was unevenly padded which resulted in the end seats rolling into the middle seat.
5 months later we are still waiting for this firm to either repair or replace the faulty sofa. Requests for a refund have been ignored.
Do not use this firm unless you love to be cheated, ignored and like living with expensive, faulty furniture.