What's the point of Server Maintenance if you don't maintain the servers?

Riot, I don't think your technicians know what the word Maintenance means. If maintenance doesn't solve DC and lag issues, then it's not really maintenance. NA servers just went through maintenance on August 20th, 4 days ago, and I've had so many teammate dc's and people complaining of lagging from my team and enemy team these past few days, more than usual. Just figured you would like to know that the servers are still crap, still.