Furious at lack of notice for outage

I am angry that Bryanston Vumatel service has gone down for 2 working days in my suburb. With an email notice not even with 1 days notice. I tweeted your @vumatel and received an unsatisfactory response as they did not know what was happening. I have had to stress and struggle to find an alternative with little notice. I want to know how you can do upgrades at peek work periods and not on the weekend as I will now be losing 2 days of work. I want answers and a call today to resolve. I find this unacceptable and disgraceful that in this day and age you can knock out our internet for 2 working days. Call now.