Most quotes are not refused.
They are forgotten, by both sides.

1. 1
   Quote sent

   From your quoting or accounting tool.

2. 2
   Day 2

   A light check-in: did it arrive, any questions?

3. 3
   Day 5

   Something useful: a photo of similar work, a detail.

4. 4
   Day 10

   A last, polite nudge before the slot goes.

5. 5
   Won or closed

   A reply books the job; silence closes it and asks why.

The quote, the amount and the days are an example. Every follow-up stops the moment the client replies or accepts.