Breach of contract: client used my designs without paying after I withdrew them

Two parallel actions: (1) IP infringement at the Ministry of Economy for unauthorised reproduction of copyrighted works (your designs are protected from the moment of creation, no registration required for copyright); (2) civil damages claim at Dubai Courts for unjust enrichment + actual licence-equivalent fee. Step 1: send a takedown demand to the client and a DMCA notice to their hosting provider. Step 2: preserve evidence — Wayback Machine snapshots of the live site, original .ai/.psd files with creation timestamps, email chain showing pitch. Step 3: file civil suit; statutory damages can be 2-3x the licence fee plus legal costs.