Mweb Fibre ......pathetic service, no transparency!

I have recently purchased Mweb home fibre (uncapped line). According to their website they have a "grace period" of 14 days when "thresholds are not app****". Within 12 days of connection my line was throttled. I called them on 18 September 2018 to get an explanation, as I was still within my limit and secondly I was also still within the grace period. I was unable to get any assistance. I have been trying to contact them since then till now, with no success. My online query on the same matter keeps getting closed. On messenger I have been trying to also get feedback with no success. They claim that online activation of contracts are not subject to the CPA and they have no obligation to provide me with any feedback. They also claim that their website is incorrect and in fact there is an "ad hoc" data usage rate which is calculated from day 1. Thus negating a grace period. I am really appauled that no can provide me with a proper explanation to date.