Unexplained deductions upon withdrawal

I withdrew $44 but received $34. When I contacted them, they told me it was a network charge (ERC20), but I withdrew via TRC20. When I gave them proof, they said it was a normal, new fee, even though I've been with them since March 2025 and these deductions have never happened before. The next day, I withdrew $178 but received $175. I told them that $10 was deducted when I withdrew $44 and $3 when I withdrew $178. When they realized their mistake, they became flustered in their response.