The best restaurants serving Japanese food in Springfield Hackney London

Ordered food to be deliver to participants of a training. Paid, got confirmation email - on the day of delivery I called to triple check when the food is going to be arriving... They could not find it in the system. After a few minutes of searching the person on the other end of phone who did not mute itself said "oh its here.." they told us the food is going to be with us in the next 15 min - cut long story short after a few next phone calls the food arrived 75 min later. In the meantime - the participants went to shops and got themselves food - being very disappointed since we as host promised them lunch. Called once more to resolve me refund but...they cannot find us in the system again and the person on the line was everything - but helpful. first and last time. Very frustrating.