Disappointing sevice

I had a express mani done on Sunday 24/05 the cutex chipped 2 hours after completion. I went back on Monday to fix it up ( which already compromised my schedule) I decided to apply gelish as the normal cutex was such a mess. Thought I would be charged for the difference between gelish application and my express mani which is R50 - however I was charged the difference between a gelish mani - and express... Which I think is disgusting - considering I did not have the gelish mani AND that I had to go back to fix their mistake... The service in general has gone down at this specific branch, staff members don't seem to value the clients , which is disappointing as I have been a loyal and regular client.