Billing case still unassigned after 1 month, invoice now past due, Basic Support only. How can I get billing review escalated?

I understand this is a stressful situation. Unfortunately, with Basic Support, you have access to customer service and account support, but not technical support cases or direct case management for billing disputes. Basic Support does not include access to Cloud Support Engineers who handle detailed billing reviews and case escalations.

Here are your options to get this resolved:

Immediate steps:

1. Upgrade your support plan temporarily - Consider upgrading to at least Developer Support (starts at $29/month or 3% of monthly AWS usage) or Business Support. Higher support tiers provide faster response times and access to Cloud Support Engineers who can review billing cases. This would allow your cases to be assigned and reviewed.

2. Contact AWS Accounts Receivable directly - Since they've already reached out to you, respond to them explaining that you have open billing dispute cases and are actively trying to resolve this. Ask them specifically about the dispute review process and whether they can coordinate with the billing team.

3. Use the AWS Support Center - Even with Basic Support, you can create account and billing support cases. Make sure you're selecting the correct case category (Account and Billing Support) rather than technical support, as billing inquiries should be available even on Basic Support.

4. Payment arrangements - While working on the dispute, you may need to discuss payment arrangement options with Accounts Receivable to prevent account suspension while the review is pending.

Important context about your charges: The charges you're describing (public IPv4 addresses and data transfer) are standard AWS charges that apply in addition to EC2 Spot Instance compute costs. These are documented in AWS pricing pages, though I understand they can be easy to overlook when starting out.

Going forward: To prevent similar situations, consider using AWS Budgets (free to set up) to create billing alerts, and carefully review the AWS Pricing Calculator before launching workloads to understand all cost components.

The key issue here is that Basic Support has limitations on case handling. Upgrading your support plan, even temporarily, is likely your fastest path to getting the cases reviewed and assigned to someone who can help evaluate your situation.