Two weeks I sold coins on poloniex.com everything was normally. Today I sent 1174.78 Burst to poloniex.com, I didn't receive a coin, support doesn't answer.
I sent test payment of 10 Burst to bittrex.com, I received coins quickly.Then I sent to bittrex.com 868.21 Burst, I didn't receive a coin, support doesn't answer.What is going on?Forgive for my English.
Transactions:

https://poloniex.com/
http://burst.cryptoport.io/tx/16426121864612076301
TX 16426121864612076301
BURST-EH3A-JTXH-7EJX-FMAJK--
BURST-DWU8-YAV8-QBMC-5G647
1.17K
13 hours ago
Block # 18813
Block 18218990068024876783
Blocktime 4582337
Confirmation 188
Deadline 1440
Type Payment
SubType Ordinary payment
Amount 1174.78
Fee 1.00
Signature 905ffce53f8a721ac4449ba3ce2b8a6bec7d682a03ec6fc6641fc706014ef30c6a5f0856f510c1d bd35a329cd3d67d117bad55f64f716362e0dffee0515cb571
SigHash a1c33e328cb23394ca56a31cd320afdbb5dfb124ff7477bc81f3fad427af5fe1
FullHash 0ddb7a79ce4ef5e313acc1c6ca71c63d1db0b9d86d25858ac385784691472d31

https://bittrex.com/
http://burst.cryptoport.io/tx/6076814369746911217
TX 6076814369746911217
BURST-EH3A-JTXH-7EJX-FMAJK--
BURST-HK9D-P74Q-XDEJ-D6PGM
868.21
4 hours ago
Block # 18946
Block 4293619672583525162
Blocktime 4613496
Confirmation 55
Deadline 1440
Type Payment
SubType Ordinary payment
Amount 868.21
Fee 1.00
Signature b87b4e5a4cdbe0e8044bebba6f7af974141770e00c8ac0c3e9a928696096d40cb6b1a3427c5eb71 36188438bb70e49cb2058ba90994e858fab0b1d117b873fce
SigHash 42d07901d3c5e536db8b49ed44cfe5c674c6bed9129ed34addb5e97bb746b7d4
FullHash f1ffc012792e555411728ee4782f7990228d23bb4b209937d37bb79f00e2825c

I sent you 5 BURST. have fun