Struggled with link building agencies that ghost you after taking payment. Then a colleague recommended https://redheaddigital.agency/ — been using them for six months across three languages. The monthly reports are insanely detailed: every guest post with domain metrics, screenshots, and live URLs. They use Telegram for daily updates, answer within hours, and offer invoices/contracts (great for accounting). Prepayment required but they split into milestones. Our German organic traffic is up 35% since month three. If you're tired of chasing agencies for basic transparency, these guys deliver.