Bad service

I open an account with rentoza I struggle to get my order almost 2 months I've been sent to left and right and centre I send WhatsApp email calls. When I spoke with one of the agent they told me that I mustn't pay until I got my order after I receive my order I ask them how will I pay for my outstanding balance they just gave me a link of 400 while I have outstanding of 800 I've got an WhatsApp that say my account is deactivated because of the outstanding balance. I would like Rentoza to reactivate my account and I will pay the outstanding balance. I sent WhatsApp no one reply on my messages. Kindly assist