Virtual Service Agent is an “anti-non-decoder” code gate, as Wraparound is an “anti-non-fracter” barrier (both being cheap NBN ice). While the latter just asks you to have some fracter, the former asks you to use (and reuse) the decoder you have. So if you don't keep buzzsawing VSA fair and square, you'll keep taking 1 tag (and losing $1 too).