0/unconfirmed and now no transactions anymore
I have observed from other experts that if you 'abandon transaction' your data will eventually be forgotten by other nodes and return to your account. You can 'abandon transaction' from the GUI console in 'transactions' by right clicking on it and selecting 'abandon'. This might take some time as even one outdated node might re-broadcast it again and it will get picked up by other nodes. Patience is what I have read. From there delete mempool and restart.