Rentoza

I have been pestered by Rentoza for the past few months, yes I had a device with them but when I put in a claim and pay the excess for a damaged device, then I am told that I do not have a contract with them, but then they try to double debit my account and add devices to their supposed contract that I have never signed up for or taken delivery off, they then send emails about laying a charge at the SAPS and getting their team to reposes the items and yet they cant even tell me what items I have rented from them.