I just couldn't get one of the DNA samples registered, so I went onto the helpline. I was number two in the queue, but the 'music on hold' was so jolly I didn't actually mind too much and got on with what I was doing.
Once Aaron answered, after not too long, he sorted the problem in a couple of minutes, talking me through Plan A, whilst assuring me there was also a Plan B.
The latter wasn't needed.