My name is ***** ***** I will answer your question for you.
I can appreciate how frustrating you must feel with your issues. Let me help you to resolve your issues.
Firstly, JustAnswer.com is not affiliated with the Tophatter Auction Website. Therefore we cannot address your billing or bidding issues directly, however I can direct you to where you can.
After researching the Tophatter website I have determined that they do not have a telephone support number, however they do have a customer support link where they indicate they would be more than happy to address customer issues. Here are a couple of links:
Here is the link to why you may not be able to bid.
This link addresses other customer buying issues.
I hope I have been able to steer you in the right direction. I am sure that if you contact the Tophatter web site per their support links, you will be able to find an acceptable solution.
I would appreciate a rating for my service to you.