I do accept that every trade has its "non responders", and I have come cross a couple of excellent "one man" outfits who I understand are busy "doing their thing", so may only reply "after hours". But boat servicing just seems to have a far higher percentage of businesses that can't be bothered to communicate with you. Our current problem is not a one man business, but despite daily calls to the office, (has an answerphone but never replies), and now daily e-mails, but still never bothers to reply.
I don't expect them to promise me the earth, or prioritise me over somebody else, a