Plumber Required - Replace Corroded Silver Basin Waste Ring – werribee

I need a qualified and appropriately licensed plumber to replace the corroded silver/chrome-plated circular ring surrounding the pop-up drain plug in my bathroom basin. I have attached a close-up photo showing the exact part that needs replacement. Issue: • The silver metal ring around the drain plug has extensive rust/corrosion spots. • No water leakage. • Basin drains normally. Work required: • Inspect the corroded outer basin waste ring. • Replace this part with a suitable new chrome-finish fitting. • If the ring cannot be replaced separately, please quote for replacing the complete basin waste assembly before proceeding. • Test for leaks after installation. Documentation: Tax invoice with plumber’s licence details and written confirmation of completed work and leak testing. Formal compliance certificate only if legally required. Maximum budget: $150 AUD inclusive of parts, labour and GST. Please confirm your total price before accepting the job. No additional work or charges without my approval. Must be a qualified and appropriately licensed Victorian plumber. Thank you.