For what that I know you can't block.
Try to move funds to another wallet, maybe mix the funds to avoid spam tx.
I will try doing that in the future,i was thinking of doing that,but everytime i want that i get the unconfirmation that lasts 48 hours and i never do it
im having lots of troubles,everyone who sends me under 0.0001 gets my wallet litteraly blocked,everytime i send btc it wont confirm for 48 hours and later that guy that sended me the btc (with fee that was under 0.0001) gets his money back
please help,how can i block those translactions on blockchain.info!?
So basically you cannot send coins when an incoming transaction has no confirmations? That should not be working like that imo..
I can send the bitcoins,but the guy that receives the money will receive it but with no confirmations and after some time the translaction gets deleted and everyone losses the money except the first guy that sended,he gets his money back
It would happen if the person pays low fees nevertheless. The best method would be waiting to send goods after 1 confirmation or if the person pays average fees.
I can suggest you to change wallet. Coinbase it is maybe the best web based wallet for bitcoin.
It is not necessary to be connected with one wallet which give you problems when there are to many other sites which give excellent similar service.
I dont know about coinbase,i need a fast wallet that works good with gambling sites
Coinbase isn't any better than other wallets. Other wallets allows you to choose outputs to spend.
No matter what wallet you use, you've to wait till they get confirmed.
You can only do that; "Dear sender; while sending my bitcoins to me, please pay 2x tx fee (0.0002 BTC)".
Also you can choose "confirmed" tx'es before sending bitcoins. You need full control over your bitcoins to choose which inputs have confirmation so I advice you to use Bitcoin Core (Also you can disable to spend unconfirmed tx'es on bitcoin core).
wait so if the sender sends me a new translaction of 0.0002 the older one will get confirmed as well ?
It depends. If you spend the output of the unconfirmed transaction with higher and more attractive fee, pools implementing CPFP (Child pay for parent) would consider confirming the transaction associated hence getting all the fee. However, the only big pool implementing this is Eligius which have a low hashrate hence it wouldn't have much chances