As you can see below they are authorized to book with other forwarders/shipping lines if they fell that their service and transit time is fast.
So it is up to you to make the bookings and local handling as smooth as possible.
Please confirm back by overnight.
Mr Krishan also said that they are tired of miss-communication between shipper and forwarder in Thailand.
Even if not our fault still up to us to solve this.
Look forward to your repy,