Poor service

I gave my cellphone in for repairs as the screen was damaged and i pay R40 a month for insurance. After 2 weeks i received a sms stating my cellphone was repaired and i need to pay an amount of R250 when collecting. I took my cellphone an went home an i just left it on the table the screen the had cracked. I took it back to edgars and the staff called finrite and i tried to explain they put a cheap glass and its only the second day. The consulant was rude and said i have to rebook and pay R300 as a rebook in. Total *******.