The memory issue may not necessarily be from bad ram, it can also be due to configuration issues. Or rather it may be fixable with configuration changes.
I had memory issues with my PC build which I fixed by reducing the speed to 2800MHZ, which is much lower than its advertised speed of 5600MHZ. Actually looking back at this it might've configured its speed incorrectly in the first place, reducing it to 2800 just happened to hit a multiple of 2 of its base clock speed.
This isn't really feasible: have you looked at memory prices lately? The users can't afford to replace bad memory now.