There's no one here who is into selling/marketing and has not gotten ghosted by their prospective customers. (let me know if there are any:)
I experienced it a lot in my initial days of outreach. But after spending sufficient time in selling and marketing the key mantra I found to not get ghosted by your prospective clients is "not to sell to them". I learned this while working on one of my projects (www.promotee.co)
Talking to your customers like you are one of them and facing the same issue is something that interests them to talk to you.
Remember that they're not interested in what you've to offer, initially. They're interested if you've something that solves their problems. However, it's difficult not to talk about your product in the whole conversation but remember that once they see you being salsey, they'll run and ghost you forever.
What are your experiences of getting ghosted and how did you overcome them?