Overcharging

How can I pay R2,200.00 to fix a broken screen of a Huawei T8 tablet when the price of the tablet is R3,000.00 To buy the genuine parts, it cost less than R1,500.00 add labour it shouldn't add up to R2,200.00 When I speak to the consultant to decline the offer he asks me where am I going to install the parts. I ask him is that why the quotation is so high then he gave me attitude. Vodacom Bethlehem repair shop.