Not surprised.
For my 10+ extensions have always been treated very well.
COR at CW requires 200b fee which covers the EMS post. You do not return to collect..
As for all your other nonsense such as broken toilets, cold food, parking issues etc are all rubbish..
BTW as pointed out in the thread the appointment system at CW works a treat..
Here is appointment link..
https://bangkok.immigration.go.th/en/onlineservice-and-publicguide/