CALL OUT CHARGES

Electrical contractor glasgow recently i have been call out to a job i did a couple of weeks ago the job was done satisfactory but due to high winds the outside light had stopped working, this was due to the lamo inside the fitting blowing. i had to charge a call out fee for this. but the customer argued this im just looking for feedback on this, i spent in all two hours going to the job fault finding and im expected to do this for free, some people just dont understand that im running a business not a charity pardon the pun. this occur every so often would love to hear some feedack http://www.wesuk.co.uk