Three keyholders in a year and none of them lasted. Is it me?

Since last summer I have had three keyholders. First one went quiet after five weeks. Second one and I agreed to stop after about a month, amicably, she said her life had got busy. Third lasted seven weeks and then the replies got shorter and shorter until there were none.

Every time I have been polite, I have kept my end, I have not been demanding. And every time it dies around the six week mark, which is starting to look less like bad luck and more like a pattern with me in the middle of it.

I am not fishing for reassurance. If I am doing something that makes people drift off, I would rather hear it.