I would not recommend removing the feedback first, like S said.

Kia ora Howard, This website doesn't seem to be related to Trade Me; I highly doubt this issue stems from Ping. I would recommend contacting your bank via the number on the back of the credit card and letting them know about the continued unexplained charges - they would be your best people to contact.

I think the message still serves a purpose. Even though it might be meaningless when placing positive feedback, it is important other buyers understand the issue when negative feedback is placed - in addition, as a seller, I would much rather have a little message so I can understand the issue, rather than just being left with a meaningless sad face.

For me, people, unfortunately definitely use Afterpay on low value items. I've found that in previous times, Afterpay made up maybe 15-20% of my sales, but now easily half of my sales use Afterpay (a sign of the economy I guess.) In saying this, the bulk of my sales are around the $20 mark, so it can be absorbed by the ever decreasing profit margin - I imagine this could be even worse with low ticket items which could have less of a margin to absorb this. I know a good portion of my sales wouldn't happen if I didn't accept Afterpay, but by raising your prices to accommodate Afterpay fees, I...

I would recommend contacting Trade Me with this one - it sounds like a new technical glitch they may not be aware of.   Submit a request – Help - Trade Me

Something else I would like in regards to feedback is the opportunity to filter out all positive feedback, so you can view the negative feedback on traders more easily - this would make it far more meaningful. The feedback dispute process also sucks - I've had feedbacks placed (somehow) after the cut-off; worst one yet though is a feedback placed complaining the product arrived broken, despite the buyer admitting he broke the product by rough handling when unboxing it - that feedback still is up.