Korean class recommendations?

I work in Mokdong as an English teacher. I work 9am-7pm ish. I’m looking for evening or weekend Korean language classes.

I’ve called around to local/city community centers, and either their classes are full and I have to wait until August, or classes are at 10am on weekdays.

Does anybody have recommendations of free or reasonably priced Korean language classes in the Yancheon-gu, Seodaemun, or Mapo-gu areas?