OK, to answer some of the questions that have been asked.

If a buyer contacts me and advises that they have made an error in purchasing the product, I am more than happy to agree to a sale cancellation.  However, if a buyer simply states that they just don't want it anymore, particularly with my auction items when they have outbid somebody else, they get reported as a non-paying buyer.

Phorum Junkie, Ebay confirmed in my discussion with my account representatives, that the ONLY reason that my selling account has been restricted is because of the slow postage DSRs, that is the only breach that has occurred with my account - 2.64% when the maximum allowed is 2.40% at the time of the evaluation on 20th September.

This is regardless of the fact that all the other DSRs are well within limits and that since the date of that evaluation, even the slow postage DSRs are well within the limits.  Ebay even admitted to seeing that I was well witin the performance standard now, but the restriction applies to the evaluation carried out on 20th September. 

I am the first to admit that I have made some errors, and when you trying to manage around 5,000 listings, mistakes can and do occur.  I try to avoid mistakes, but like everyone else on Ebay, I am only human, I am an honest sole trader just trying to run a business and pay my bills.

Ebay have treated me harshly in this regard, I would have accepted a restricted trading account even of say 5,000 items instead of my usual 15,000 items, to at least give me a chance to further improve my DSRs etc. 

And to think that there are some really shonky traders on Ebay who seem to manage to keep their trading account active.