I initially made a deposit of 0.0255 btc into my exchange wallet.
Anyways, when I decided to withdraw, I get some error message. Contacted support. This was their reply:

"Dear customer of Deviantbit! We are sorry to inform you, but due to recent changes in our Terms of Service (ToS), we had to disable the function to withdraw money from unvalidated users, that try withdraw money higher than 1 BTC, to prevent bots and scammers from withdrawing stealed funds. To continue, please validate your account, by depositing 0,025 BTC to your Deviantbit Account. With best regards, after making deposits, you will return your bitcoins back and your account will be unfrozen! Deviantbit Team."

I replied back saying:
"I made a deposit of 0.0255 btc. It is still now allowing me to withdraw WHY"

Response back was:
"Because of the price difference and also from commissions transfers between the trading exchanges you have made a Deposit in the amount of 0.023 bitcoins,to obtain the verification you need to make a Deposit in a single transaction in the amount of 0.025 bitcoin! Deviantbit Team."

My response:
"Check my deposit history..I transferred 0.0255 BTC (excluding the transfer fee). The transfer fee and commission fee is was deducted SEPARATELY"

Response back:
"The Commission is read when transferring bitcoins from a trading exchange to a trading exchange and considers the approximate price difference in trade! Please follow the rules of the trading exchange! Your Deposit including commissions should be in the amount of 0.027 bitcoins in one transaction! The verification deposits will only be accepted in one transaction, including commissions! Upon completion of verification, you will return all your transactions back and unfreeze the main account! Deviantbit Team."

My response:
"You still haven't answered my question....why does my deposit history show a balance of 0.0255 btc and not less?"

Response back:
"Because the Commission will be withdrawn from your balance not much later! Deviantbit Team."
and on and on it goes.....

This is my transaction below which clearly shows the whole amount of 0.0255 btc deposited:
https://www.blockchain.com/btc/address/3B9LxZkjr2RrmbUQJi77TsEJgjmVJQTj7D

Furthermore when you login to your account then go to my account>Person Verification>Deposit is actually says:
"deviantBIT Financial Company OÜ has adopted a simplified online verification procedure which will require you make a deposit in the amount of: 0.01 BTC or an equivalent amount in any other currency. After the deposit is credited to your balance, verification will be passed."

Also nowhere in the TOS/Terms of Use mention this so called amount of 0.025 btc after deducting their so called "commissions"

What other proof do you need??