It’s a pity there isn’t some kind of opt in for being willing to serve on juries and then they could not then select you again for a period of time.
I was called up twice within 6 months, when I had a baby and a toddler and my DH was working away from home most weeks, I was a SAHM and had no childcare or family near by and was also recovering from severe post natal depression. I was excused on both occasions, especially as the first time I was called up it would have been for a murder trial that could have lasted 6 months as it was mentioned in the letter.
I have never been asked again, despite the fact that I would have been happy to serve in different circumstances.