Being ****** by Rain due to their *********** staff

I've been with Rain for almost 3 years and during that time I was on the premium package R999. I had to downgrade to the medium package 5/6 months ago as it was only me using the internet. I then received a promo deal from Rain saying that I'd receive the premium package for R849. I opted back into the premium because it wasn't far off from what i was paying for the R699 package. For the past 5 months R999 has been debited off my account every month. I've called them numerous times for them to correct this and I've had to deal with the rudest, unknowledgeable and down right despicable attitudes from their call center agents. I cant even believe these people are Rain representatives. One call center agent even went as far as taking a personal call whilst she was busy with me and then after she was done she terminated the call. Another call center agent said It was a **** and that deal doesn't exist even though I sent the a screenshot of the promo deal taken from their very own dashboard. You can not get any clearer evidence than a screenshot. It was 100% a Rain promo deal and not a ****. I'm highly disappointed in the service I've received from Rain. Rain is a great internet provider as long as you don't have any issues and need to call their call center. Incompetence staff has caused me to have a complete different opinion about Rain. Before all this I raved about Rain and got a few family and friends to sign up with them. I really hope your automated system looks after them cause your staff sure as hell wont. All this back a forth emailing and calls and still my issue isn't even close to being resolved