Battery and motherboard issue

GeMiCoGeMiCo Level 1
edited September 2020 in Others
Model: ZS570KL(Deluxe)
Firmware/App Version: Android 8.0
Location: Bucharest
Frequency of Occurrence: Very often
Rooted: No
App Name:
Description: Battery and motherboard issue

Last year in August I was with the phone in service in Bucharest and they required an entrance tax for service (not the finding and repair fee) and I refused and when on 05.02.2020 I was again because the phone stop working (from time to time the phone can be started but the battery doesn't last to much - at last 1 hour, and sometimes I remain with black screen) they required 419 euro for changing the motherboard that they founded defective. The phone cost me 483 euro and even I found a new Asus motherboard for the same model phone at 45 euro they refused to repair the phone.I want an explication why the motherboard cost so much when I already found a new one at 45 euro that they refuse to repair and where can I repair the phone at a decent price?
Thank you!
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