Problem with ZOHO making unauthorized credit card charges.

Problem with ZOHO making unauthorized credit card charges.

I downgraded my ZOHO Projects plan to "Free" last month, well within the free trial period.  I provided extensive feedback as to why the product does not meet our company's needs.  I expected a refund.  Instead they charged me another $35.00.

When I checked my account just now, it was again listed as "Premium."  When I tried to send feedback to ZOHO, a message came up that said  the server could not accept it.  What's going on?