Cheap Tickets Unable to give their customer the information on which day a transcontinental flight will arrive - no response to any message Internet

We  booked  a  flight  from  New  York  to  Bangkok  via  Tokyo  on  their  website  last  November.  the  flight is  going  to  be  in  June.  

The  confirmation  that  we  received  in  our  email  is  showing  that  the  flight  will  arrive  on  the  same  day  as  the  departure,  which  seems  to  be  wrong.   Since  the  plane  crosses  the  dateline  it  might  arrive  a  day  or  even  two  days  later.  usually  a  reservation  shows  +1  for  "Next  day"  or  even +2  for  "two  days  later".     We  sent  them  at  least  5  emails  with  the  simple  question:    "On  which  day  is  this  flight  going  to  arrive ?"    and  have  not  received  a  response  until  now.

Either  they  are  too  stupid  to  find  out  or  they  are  afraid  to  give  an  answer  in  writing  because  they  are  afraid  that  they  could  get  sued   if  they  give  a  wrong  answer  and   the  customer   is  able  to  proof  it.

We  told  them   that  we  would  probable  never  ever  book  a  flight  with them  again,   with  a  travel  agency  that  is  unable  to   inform  a  customer on  which  day  his  flight  will  arrive  and  which   systematically    ignores   their  customer's   messages.   Even  this  message   (sent  to  "Customer Care"  was  ignored -   they   simply  don't   care  about  their  customers.