You are talking about TM30 and not 90 Day Reporting which is TM47. The landlord or responsible person for your accommodation should report the TM30 within 24 hours of arrival at that accommodation. If a hotel then they do it. If private accommodation then the landlord or their agent should do it. The TM30 is still required on top of the TDAC.
No idea how long it takes to cancel but you woukd need to be outcome of Thailand when they do I would have thought. If I was you speak to an agent in Thailand with immigration department contacts.
As I said above you will need to have the issuing Embassy cancel it. This came up recently. Certain agencies may be able to help as well. Hope it all works out for you.
The Embassy issuing it needs to cancel it. However, it is known for agencies with connections to be able to facilitate this which I am sure there will be a fee for.
So you got a METV? Not seen a post where anyone was given this instead of DTV except for Soft Power - never seen it for Workaytion. Strictly speaking, you are not allowed to work remotely on a TR visa of any kind, even remotely. Hope you do not have to ait fro the METv to expire before you can apply elsewhere - ask Mumbai Embassy to cancel it.
Anonymous participant Have a look through previous posts in this group. Many have done exactly this. Been in Thailand on various visas including ED, B, VE for some time then obtained DTV in neighbouring countries with no issues.