From upgrade to cancellation????

I received an email stating that from 1 September my line was going to be upgraded at no additional costs which i was very grateful for and whilst working this morning, i get an email from Evotel stating that my contract has been cancelled and gone is my internet! I am connecting on my laptop from my cellphone's data and have been sending emails from this morning to try to find out what is going on and it is 13h30 in the afternoon and no reply! Tried the Whatsapp platform and guess what, that is also not working! I want this resolved asap as i pay my account on time every month so i expect a Service for the fees i pay.