MoMo scam calls and texts are incredibly annoying and in this era i figured why not use RL to catch the bad actors I built sika-agent, an open RL environment for training AI agents that refuse these scams in English, Twi and especially Twi–English, because that mix is how I hear most people actually talk. On results: Qwen3.5-9B completes 86% in English and 51% in Twi. The frontier models I ran stay at 90% or above in every language (about 240 tasks per model). That gap is what training small, local-language agents here should close.