Irate Customer

My Device was disconnected by Rentoza last night. No one bothered to communicate with me as to why this was done, as far as I am aware payment went off my account on Friday the 23rd of September. An agent from Rentoza contacted me today at 09:30, she didn't tell me her name, all she said was my device was disconnected in error and she would escalate this to be fixed, its now 11:25 and my device is still disconnected, I have sent the 3 emails already with no reply, if I call them on this number ***, it says an email should be sent or the WhatsApp chat can be used, I Have sent emails with no response, I don't know how I am expected to use the WhatsApp chat if the device is disconnected. What an appalling service