I stayed at the Hotel for 4 days in May and when I...

I stayed at the Hotel for 4 days in May and when I left they told me I did not owe anything and when I arrived in Uruguay, they deducted 200 dollars from the credit card that I had presented at check in and that they asked me as collateral and when consulting through my Travel agent was told that it was a tax for use of the pool and towels. Do not show any cards that kill them later.-.