Marketplace (MS Store) Purchase failed due to pending transaction

Hi,

Is there a fix for this market place bug? I have had the “Another transaction is pending…” within the market place for a few weeks now. I had attempted to make a purchase but it failed for some reason and now I cannot make any purchases at all. I have tried all the fixes suggested but nothing works. I have logged a request with the helpdesk but there has been only a generic response which solves nothing…