STRIPE BE CAREFUL SAN FRANCISCO CALIFORNIA

I sent an invoice to my tenant using Billdu. Billdu transferred my information to STRIPE and an account was opened on my behalf that way.  My tenant paid July's rent with a credit card.  I do not accept credit cards and I do not authorize that mode of payment.  Additionally, STRIPE kept the rent money for about 10 days, which I did not know because I initiated the invoice using Billdu.  My tenant payment receipt says computer supplies and it is for rent.  Furthermore, Stripe charged me $51.51 for a payment I don't accept, and they are refusing to reverse the charge in order to keep the high fee for a service I do not accept.  They still have the $1,767.12 in the STRIPE account.  I decided to close the account to avoid more charges. I have to re-open the STRIPE account that I did not open on the first place. Billdu transferred to them my information and opened the account.  They claimed that they won’t refund the $51.51 because they cannot loose money.  I am very perplex and unhappy because most of the companies care about their customers be happy.  I need them to reverse the rent money to my tenant's credit card the same way STRIPE took the money so I can pay the mortgage and maintenance to avoid more penalties.  My tenant is not paying me until she has the money back to her credit card.   There is no official manager to speak with, there is no way to call them, the support does not provide their last name and send generic emails.  I feel that their only goal is to charge fee even if their service is not suitable for me. I also contacted the BBB where I read other reviews about their lack of customer service and high fees. I am still waiting for the refund.  Please assist me and guide me. Thank you so much