Rain is *****sters be very careful

Rain robbing customers I’m on month to month subscription with Rain for more than a year. I did not pay since January and I was automatically disconnected. Now I receive a billing that I owe them R2500 and I called in to ask what is it for and the lady that called was very rude and says I was connected and I used the Wi-Fi, She apparently does not see all the call I made for cancelation and rain keeps on adding the bill. I want to know how as the router was was even off the plug for almost 3 months. My question is how is it everyone complained about the same thing