Anyone know Wiltel's EWAN service

[lionair at samsung.com (ChiYoung Joung)]

I have EWAN circuits of Wiltel(currently same company with Level3 you know) as my backbone circuit in LA.
About 2 months ago, there were some packet loss on L2 circuit, but I didn't get any clear answer from Level3 support center.
It became okey without any action, but now, same problem happen again.  I feel bored, I need your help.  
Anyone know if there are any problems of WilTel's L2 circuit on LA area ?  or 
Could anyone advice me the contact person who know well EWAN configuration of Wiltel ?
Frankly, I felt Level3 guys seems to be unfamiliar with EWAN circuit of Wiltel.

Best regards,
Chiyoung
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 Chi-Young Joung
 SAMSUNG NETWORKS Inc.
 Email: lionair at samsung.com
 Tel +82 70 7015 0623, Mobile +82 17 520 9193
 Fax +82 70 7016 0031
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