Unprofessional customer service

I recently tried purchasing a phone subscription through Rentoza which I have purchased already one phone and two TV subscriptions from and I am not one to do this thing of posting but as a customer service consultant am pretty disappointed with the level of service I have received, they told me they could not assist with the new phone and did not provide a reason as to why and said they would refund my account between 6-12 working day. Today is the 8th day to which I followed up and shockingly received feedback that the refund failed however this is happening after only I actively requested feedback which is unprofessional because when exactly was I going to be communicated with? I am highly disappointed at this and will be also leaving a review on Hellopeter Social as this is the exact service that should not be offered on these platforms. Rentoza has no call centre line for its clients and does not respond to emails left by us at their customers this is unacceptable