Well I got bad experiences. Sent 55k siacoin from poloniex to unlock hosting features. I checked the transaction in the blockchain and found that the input and output was complete. I mean sia recieved the coin and sent to my wallet. The problem is I HAVE NO BALANCE in my wallet

. So I wrote on their forum they answered that the poloniex can have trouble with withdrawals.... but the transfer happened... The address was correct. What can be the problem?
i think that if you wait a while, you will see your sia

Yea man but when? 6 days passed and still nothing happened. I trust these sia guys I hope the best...
Make sure your wallet is fully synchronized and the address you used is in your wallet.
Well, to keep things in perspective...
55,000 SC is about $23 US worth of a leading edge p2p storage platform still in beta.
I really hope you resolve your problem because this is a reputable, quality project...
But correct procedure with an initial transfer to a new address and/or wallet...
Would be to send a tiny test transfer of, say, 1000 SC... then do larger transfers if that is uneventful.