Screws broke during first adjustments - Zenit PK-06 Red Dot w/ Weaver Mount

placed on my AK pistol as soon as it came in.. when i tried to zero at the range, 2 of the 3 adjustment screws broke. the power button would occasionally stick and take multiple presses just to turn on. it doesn’t come with batteries but they aren’t hard to find on amazon or anywhere else online. looks nice but that’s about it..