Sani Car rental over charge for windscreen replacement.

Rented a car for 4 days. On my way back to aiport a stone hit windscreen and cracked it, about 10cm.

After returning and expecting to pay for the windscreen I was charged R5400 for a windscreen. I did research and the windscreen replacement at any other supplier for the same car costs R2400. They over charged me with R3000. Last time they will see me.