This shop robs their customers

Took my phone to the branch in Edenvale (Stoneridge) and they overcharged me for repairing my phone as well as trying to get a sale for a higher price by making excuses. I waited an entire day for them to "fix" the phone and when I went there the next day, they changed their price and told me I need to pay more. They are daytime ******s and should not be in business. When I got my phone back, it was still not repaired and they did not put back all the parts. This shop needs to be closed down and reported. I also witnessed them overcharging other customers with their phone repairs. Please do something about this.