If your Buyer has rejected your invoice then get in touch with them on the WorkStream to find out why and see what you can do to resolve the issue. Most problems are fixed with quick communication. If they are not happy with the work that has been delivered ask for their detailed feedback so that you can meet their needs.
Remember as per the Rules of Engagement:
an invoice should not be raised before work has been completed.
if the Buyer isn't at first 100% happy with the deliverables offer them at least two further revisions in line with their feedback.
If you have delivered the work that was agreed in your proposal for a custom project or in your Offer description, to a good quality standard (it is error-free, etc). provided at least two iterations of the deliverables, and the Buyer is still refusing to pay then you can raise a Dispute to us for assistance in your WorkStream.