Bad bad horrible service

This Mweb has changed terms of our contract unilaterally. I am on R799 LTE contract running month to month. They debited two different amounts in five months, when I ask Sisanda on their Live chat she says it is due to price increase. I asked why change terms without advising - She could not respond and told mw she is transferring me to Provisioning Team to confirm. I waited and waited until there was no response - only auto responses. Initiated chat at 3:50pm till 5:15 with just auto-responses. I am so mad - I want my money back. useless - I called many times before - You just never get through to anybody - just flipping machine talking. Yooh I am boiling.