If the puppy is confined to a crate for that long, I would personally envisage an accident. Claws caught on the crate or anything puppy can be left to amuse itself with WILL be chewed and could be a choking hazard.
My only advice in this instance is find a kind neighbour or family friend who can either let puppy out a few times a day, or if that really isn't viable, I would personally remove ALL hazards and confine puppy to the kitchen and offer puppy mats for puppy to toilet on. Yes it's hit and miss but they can be useful. Sometimes a larger space feels less of a prison for puppy and it has room to move about safely. To confine to a crate where puppy needs to have an area for wees, etc, for those amount of hours, is too big and will encourage an escapist behaviour. Crating for that length of time is waaaay too long.
I have tried with Tali to use a crate at times but he never really took to it with the door closed. As soon as Tali could be left with free reign of the then flat and now house, I found he became more relaxed when I was out. Tali is about 3 1/2 now and I have twice left him to go out for longer than a few hours. The last time was for a concert and he was ok but that was only this July.
A puppy is a baby and requires more care, attention and time than most people either have or can regularly spare. The OP may find this causes trouble in the future with things like Separation Anxiety or destructive behaviour which will be a problem and require extensive reversal training. Conversely, as much as I don't believe in leaving a small puppy alone for that time, some dogs, and I stress SOME, do adapt and it works out fine, but there is no way of telling how a puppy will cope beforehand.
As a rule of thumb, good breeders know how to assess a new owner and to check about their working arrangements. Unless the OP deliberately misled the breeder, then I would say the fault lies with the breeder, not the owner.
