Downgraded me to 3MB line without my concent

At the beginning of December my stable 4MB line suddenly became a 3MB line. Logged a fault on 8 December 2015. On 19 December the technician closed the call. Still only have a 3MB line. Logged a new fault on 19 December. reference 189CTK191215. Today the call was closed again.!!! Still on a 3MB line. Technician did not even come out. Not today or the previous time. Had the same issue in January and it took them 3 month to sort this out. So looks like I'll have my service back in March 2016 at this pace. Told the agent that their people in Telkom Towers had to fix it previously. They just say the technician must refer to Telkom Towers, they cannot. If there was any competition or a different provider I would move, but unfortunately they have a monopoly. In January I also reported then to ICASA, so maybe I should do that again to get any reaction!