Refunds & Cancellations
How to find the cancellation and refund rules for JAU, Vonka and separately agreed BullBillion services.
Last updated October 13, 2026
Which policy applies
The BullBillion corporate website introduces our company and products. It does not sell subscriptions, process payments or create product accounts. Visiting this website or following a product link does not place an order. Cancellation and refund requests concern the product or engagement you purchased and are assessed under its purchase terms together with applicable law.
JAU purchases
For a JAU purchase, review the JAU Terms of Service and the refund information linked by JAU, together with your order confirmation. Those materials explain the rules relevant to that product. Contact support@jauworkspace.ai about a JAU billing, cancellation or refund request. This address is a JAU product support channel.
Vonka purchases
For a Vonka purchase, use vonka.si and the terms, purchase information and contact route supplied with your order. Review the policy applicable to your purchase before requesting a change. This corporate page does not establish a separate Vonka refund window, subscription period or cancellation procedure. If you cannot reach the relevant product channel, use the company contact details below and identify the product concerned.
Cancellation, refunds and data requests
These are different requests. If you want to stop a renewal, ask for cancellation and confirm when it takes effect under the applicable terms. If you also want a refund, state that separately. If you want account closure, deletion or an export of information, identify that request too. Do not assume that one request automatically completes the others. Before closing an account, review the product's information about access and any data you may need to retain.
Information that helps identify a purchase
When contacting the relevant support channel, include the product name, the email address used for the purchase, an order or transaction reference if available, and a short explanation of the issue. Include the date and amount of a disputed charge where relevant. Do not send passwords, access tokens, full payment-card numbers or unnecessary identity documents. If your receipt names another seller, also check the request instructions provided with that receipt.
Other engagements and your rights
A separately arranged BullBillion engagement is governed by its agreed scope, payment schedule and written cancellation or refund terms. This page does not introduce new fees or replace an agreement already made. No statement here removes a mandatory cancellation right, refund entitlement, remedy for a defective service or other protection that applies under law. Any product policy must be read subject to those rights.
Company contact
For help identifying the appropriate product or engagement, contact BullBillion Inc., 2261 Market Street, San Francisco, CA 94114, US, email support@bullbillion.com, or call (302) 219-2361. Give us a way to respond and identify the purchase concerned. This page may be updated as our products or contact arrangements change; its revision date appears above.