- We asked Mark to come round to check on an annoying overflow in the toilet and he advised us that certain components in the flushing system should be replaced to fully rectify the problem. However, whilst he was here he managed to make some adjustments and slowed the overflow from a trickle to an intermittent drip. He took photographs to record the details of the parts he would need and asked us to contact him again if we wanted the work to be completed. Amazingly he told us he wasn't going to charge us for his time as he hadn't fully fixed the problem. Brilliant customer service. Recommended.