Hi guys new member here. I've got a problem with a landlord refusing to pay me what was quoted plus an additional days labour for installing a new boiler. The extra day was due to the tenant being unreasonable and asking me to start work at 10.30 and leave at 16.00. I initially quoted for 2 men for 2 days as the old non condensing boiler was on the top floor of a 3 storey flat roofed property. I needed the second man just for lifting and shifting. It dragged on for nearly a week and already gave an extra day free of charge to complete the commissioning process. I was wondering were I would stand in regards to withholding the benchmark paperwork until payment is made?. I already did the job as cheap as possible due to the fact I've just become self employed and could do with any work at the moment. The landlord says he normally gets a boiler changed and commissioned in 5 or 6 hours for £250 which I highly doubt. Any help from you guys would be greatly appreciated.