I'd also add that it's much easier to estimate small things than big things.
If your estimate is longer than 5 days, then break it up into parts until all your estimates are under 5 days.
Yet another tip: design your UI first, then make your estimate. Estimates become a LOT more certain once you've defined the UI (look up cone of uncertainty for a graphical explanation).
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
I'd also add that it's much easier to estimate small things than big things.
If your estimate is longer than 5 days, then break it up into parts until all your estimates are under 5 days.
Yet another tip: design your UI first, then make your estimate. Estimates become a LOT more certain once you've defined the UI (look up cone of uncertainty for a graphical explanation).