Chilli flowers do not grow into chillis

In the last fortnight, the chilli plant which was growing in the same pot as the hibiscus plant started flowering, and had as many as five small flowers. These flowers are small, white in color with grey stamens.
However though these flowers were blooming for two or three days, they only dried away, no chillies were formed.
Ants were spotted on the chilli plants , however these flowers could not get pollinated
After some dies, the flowers, withered and dried away, now there are some new buds on the chilli plant.
It would be interesting to find out the yield of the chilli plant, whether it will yield any chilli or just wither away, especially as the chilli prices are high.