We've gotten lazy in how we deal with some issues and using ineffective means. At this point, I'd recommend making an appointment to meet with the ultimate decision maker, whether the marina manager or the owner or whomever. There is still a huge benefit to sitting down face to face, calmly and relaxed, and having a discussion. This allows you also to put it in proper context.
I'd approach like this.
Thank you for meeting with me today. I want to start by saying I've been here four years and very much enjoyed it and generally been very happy with the service. However, there are two instances which I do feel haven't been up to your normal standards. Then I'd outline the two you did above and I'd be prepared if and when they asked what you were seeking or thought would be fair with a truly fair number. Keep in mind they did spend time and did the work, just not right work. In such cases I often find 50% reduction of those charges to be appropriate. It's sharing of the loss. Is it fair? Should you get everything back? I can argue you should but seeking such isn't conducive to a fair resolution and more likely to get you nothing.
Understand as you go in, it's you who is seeking something, who is asking for an accommodation. They don't have to do anything. That's why I'd always approach it as one asking for their help rather than telling them what they must do. It's also why I suggest face to face. You can more easily come across as a reasonable man and they are far more likely face to face to want to make you happy. Easy to say "no" by email or phone. Far more difficult in a face to face discussion.
In the circumstances, I couldn't do face to face, I'd try for webcam but if that wasn't possible, go to phone and only with the one capable of making the decision. Still phone misses all the subtleties of expression. I use email after discussion to confirm my understanding of what was agreed upon.
Now, when I will use email or mail is when I am unable to make contact and then I do a thorough email covering all aspects and matters and my inability to reach the individual. I make it very complete though.
I see young people try to handle disputes by text message and inevitably each volley becomes a little uglier and soon it deteriorates into a terminal fight.
BandB,
So, they had time involved. And it was by an incompetent person that simply wasted your time and you think 50% payment on a job that has a negative value is fair???
I'd be nice, but politely explain that I got nothing and suffered time and inconvenience. I might start by asking, "how to you intend to make me whole?" before the next step.
Depending on his reaction, I'd make my next move. If the vendor does nothing after trying to solve the problem my next step would be:
You charge me NOTHING, and give me an additional $xxx for my inconvenience and time wasted on getting nothing done and time lost. And I won't take you to court and sue you for much more.
He REALLY should fix the problem at fair value, and reimburse me for time and opportunity lost. That would be the honorable thing to do.
If he tried to weasel out of things, I would make my intentions know and file a small claims action, naming him, the marina and the mechanic.
Then I'd hope he would come to the table to fix things right.
Personally, I would not want to continue with the suit, because no one wins, especially if lawyers get involved. However, one could recover more than nothing.
Fortunately, I've never been to court with a marine issue. I've had a few when I failed to use my contract that should have gone to court.
The goal, however, is to prevent this incompetence.