FNB SERVICE PROVIDERS WEFIX AND DEVICE GURU MESSUPS

I have a fnb cell phone which LCD went blank on 24 Novemeber 2017. after 2 weeks WEFIX had not fixed the fone but gave me a damage report telling FNB to replace the fone. i informed FNB who then told me to email DEVICEGURU the report, i did so and after 3 weeks up and down DEVICEGURU tells me to take the fone back to WEFIX. WEFIX replaces my LCD and hands me a invoice for R1300.00 i refuse to pay it cause my fone is 3 months old now WEFIX damaged my fone cover by removing the LCD again which they replaced and tell me to call FNB. reported this to FNB who does not give a **** they money lenders not cellphone shops and there service providers WEFIX and DEVICEGURU just blame FNB. now i have a dead fone 4 months old should have gone to vodacom, mtn or cell c