The service was very good, I didn't have to wait too long for the mechanic to arrive and he was very helpful and courteous. The job took about 45 minutes and the car worked perfectly afterwards. However, I do think the charge was excessive given the job took 45 minutes, there was an initial charge of £75 which I assume was your fee for directing the mechanic to the job and then a further £269, including £20 for new fuel payable on completion. I appreciate that the mechanic is probably self employed and has the cost of running his van and other business expenses like insurances, but charging over £200 for 45 minutes work appears excessive in relation to other professions. I have terminal cancer and am disabled, have a blue badge, am unable to work and rely on benefits to live and would be house bound without my car.The near £400 cost of my mistake is disasterous and the trade off is that I've had to turn my heating off to afford the cost. You might want to consider offering a vulnerable person register and discount scheme for people in my healh position.This would be a very good marketing ploy and differentiate your service from competitors. When you have health issues like me, concentration can be a big issue and it's easy to make silly mistakes.It would really help if you had a scheme that offered some discount for vulnerable people.Hope this helps!