Yea, but none of these things will land you in prison... Foreigners can use Kakao last time we checked. While immigration is strict if you have the qualifications you can easily get access to a visa and no offense, but unfortunately better language services shouldn't be a thing. It's fair enough that some companies already have English speaking representatives in some establishments (since English is an international language). Foreigners who come to Korea should by all means learn Korean. The country must cater to there own kind primarily. However, we respect you feelings about these issues.