Briggs Marine Contractors interview questions

Initial interview comprised of an overview of CV and my experience. This was followed on by competency based interview questions. Lastly a questions session around the role and information on the decision making process. I was informed that the company were "keen to make an appointment" and that I would be advised the same week of the outcome. I did not hear anything back, accepted another job offer a few weeks later and contacted HR and Hiring Manager out of courtesy to inform them and to withdraw my application and received no response to this. Quite discourteous.