pine floor

We are having our pine floorboards restored and to replace our original damaged ones the contractor (reputable and well-reviewed) has supplied some he 'had from a previous job'. He installed them without showing me them or telling me anything about their condition. Some are in OK nick, some less...

We are having our victorian pine floorboards restored and the contractor has used a pale ('natural' shade) ready bought wood filler to fill gaps between boards and damage from nail holes etc. The result (after base coat of varnish) currently looks terrible- huge variations in colour- and looks...