A big quote goes out on Thursday. Not because it is hard, but because the site notes are in one place, the supplier prices in another, and the last one like it is in a folder called FINAL_v3_ACTUAL. By the time it lands, the client has already heard back from two competitors who were quicker, not better.
Same week, a caller rings while you are on the tools. Fair enough, you were working. They get voicemail, hang up, ring the next name on Google and book a nine thousand dollar job that afternoon. You find the missed call at 6pm and ring back into their voicemail. Poetic, in the worst way.
Neither of those is a lead problem. Your phone rings plenty and your quotes are good. It is that the admin sits behind one person who is always on site. That is the spot a system fixes first, and it is the cheapest problem in the business to fix and the most expensive one to ignore.