Deposits via debit in mortgages

I make deposits and withdrawals in mortgages through the debit card. In tax reduction expenses all these deposits appear as purchases through the card resulting in a very large amount that is not justified by my income. For example, if you make a deposit of 100 euros 200 times, it looks like 20,000 euros, but in fact it is money from the withdrawals I have made. Betting doesn't give relevant proof if you don't record a net profit. Does anyone have relevant experience on the matter?

I think I can't connect between mortgage and playing in a casino.´ Can you help me with this, please?

Alternatively, what does your bank say?

I understand your concern regarding deposits and withdrawals appearing as purchases on your debit card and potentially affecting your tax reduction expenses. It's important to keep accurate records for tax purposes.