Thanks, and yes, this is true.
In fact, the main mantra that I endeavour to live my life by, which is not so much to do with 'anger' (because that always subsides eventually), but more to do 'worry' (which is a far greater threat to wellbeing), is that I always try not to fret about things that I can't do anything about.
Of course, in this instance, the one thing that I can control is whether I give the Lansdowns another penny of my money.
And I will not.
Ever again.