You have great comments here so far. As a former elder that was supposed to make these calls, let me say that the the best answer may be that they are busy and don't want to waste efforts on a "lost cause." It could also be that one elder is the assumed person to do this call- probably the one whose field recruiting group she is assigned to, and he just figures she doesn't want to be bothered. It could be that she is a woman and a secondary member of the JW's.
I want to address this differently. I was there. I wasn't entirely left alone for the first few years, but pretty much. I knew why in my case. I was a "doubter" whose thoughts could shake their beliefs. They knew that I already knew how to use the publications to find answers. But I was there. I was a bit concerned about them not wanting to "save" me and help me. It's a normal thing. If you didn't want to go to a wedding, you would still want to be invited. That's the kind of feeling we are talking about.
What you need to do is get over that yourself by recognizing that Watchtower is a dangerous mind control cult. What that means is that you are only useful to the group when you are a productive member. Once that ends, they don't waste much time on you. Despite the elders not knowing all this, they react the same way. Deep down, they may feel they are bothering a person to try to get them back in the fold, they may feel they have no real answers to help such a person, but deeper down- they just want to help the good little sheep that are still productive members to stay that way.
Use their lack of follow-up to recognize that they are not the wonderful caring representatives of God on earth that they claim to be. Recognize that this is a system-wide problem among Jehovah's Witnesses.