Hello, I was quoted £30 an hour from a stonemason. to remove a section of render from the rear of my house so I could see the condition of the bricks underneath (damp issues). They were maybe just over an hour so have invoiced for 1.5 hours (fine ok) but two of them arrived and I have been invoiced for two people, plus VAT the total comes to £108. My written message prior to this appointment was “The cost would be £30 p/h”. I just feel aggrieved do I really owe £108?