CSI rentals

CSI has taken our whole deposit after moving out claiming that they need to repair the unit. They have not responded to any emails and yet handed us over after 1 month. I paid half the amount and they have doubled it. They keep robbing people and I will never recommend this useless company to anyone. They keep sending us emails and messages to pay when they did not even acknowledge the first payment I made. They are taking unnecessary money from us and does not respond when we try getting in contact. They collections company is just as bad as we have emailed them with all relevant information and they have not acknowledged but they keep sending messages for money.