Useless

I have a soft lock on my sons tablet to avoid any surprises when the bill comes at the end of the month. Vodacom have been applying the limit diligently for the last 8 months up until December when they decided to let it run over with R2000 on data charges. their lame excuse is I excepted the term and conditions. Well here is the problem, how can you honor my request for 8 months and then decide that you let it accumulate in December to such an exuberant value. There is a single charge of over R1500 on the 3rd of December at 01:40 at night on a school evening I should mention. How is that possible? I have been a loyal customer for the last 15 years and then you go and do this. I am also a red VIP contract customer, but I will not be renewing my contract with these idiots.