Account cancelled with no warning.

My business missed February payment for our internet connectivity due to cash constraints. Webafrica decided to cancel our account with them without any notification. We only found out after we had paid them and the services were still not restored after 2 days only for them to tell us our account was cancelled with no warning. At this point we have to wait 5-10 working days to get reconnected. Phones, emails etc are not working because of all of this.