It is a great pity that this country that claims to be "the hub" of the World, cannot set up a simple automatic "credit advice/receipt" sent to a customers email each time there is a transfer. No problem to charge 35 Baht to online transfer funds from Hua Hin to Bangkok, despite there being recent news that this would no longer be the case.The correct terminology is "Credit Advice/Receipt". If you give the bank: 1) The date the transfer was made and where it is coming from, 2) amount of foreign currency, 3) date received in your bank, 4) amount in baht. It will be much easier and you should be able to get this at any future time. If they have to look it up it could take hours and is a lot of extra work for them. Big Boy did they ask for the source of the funds? In That Yang, they require you to show that the funds only come from a retirement account or pension fund. You have to have a letter showing this.
I will post the following here, as it may be on option, not withstanding Big Boys efforts:
K PLUS enables expats to transfer funds overseas with ease
https://www.bangkokpost.com/business/1694488
“International Transfer”, the new updated feature from K PLUS, gives over 11 million K PLUS users, including expatriates in Thailand, peace of mind while their money is transferred through the app all over the world without worry.
KBank offers the overseas fund transfer via K PLUS app in six currencies: USD, GBP, HKD, SGD, AUD and EUR to more than 20,000 banks with 77,000 branches in 24 countries worldwide.
More at the link. Not sure if it is supposed to also include incoming transfers?