How can I cancel my DTV visa to apply for a Non-Immigrant B visa in Thailand?

Do not take this as 100% but pretty sure the only place you can have the DTV cancelled is the issuing authority ie the embassy who issued it. You will need to wait and contact embassy. You could go to an immigration office with friendly volunteers that may be able to ask questions for you. Depending on location there are helpful volunteers at offices. The ones I spoke with last week were most helpful in Chiang Mai. Good luck getting it down. I had a bit of a nightmare moving from O to B but it all worked out in the end. Two trips to Singapore and a border run to Cambodia it took

Embassy closed for sonkran try Thursday

I could google this. But what is a digital nomad…….

They might say visa has to run its course. See you soon in 5 years

A visa can not be cancelled, and the embassy won't issue another visa while you hold an active visa. However if your employer is willing to jump through the paperwork hoops to get you a Non-B inside Thailand the DTV can be changed for another visa type at an immigration office inside Thailand in exactly the same way as tourist or visa exempt entry can be (it's basically just a glorified tourist visa)

I personally don't think that DTV visa holders have the privilege to change to a Non-B Visa. I think the best option for you is to leave the country, apply for your new visa, and re-enter with that visa. The DTV visa will either be automatically cancelled or can be cancelled later. Immigration officers are the best people to answer that—wait a few more days for a clear response.

It's a holiday