MWeb and SADV Fibre installation problems

We had an ADSL line with MWeb. Asked them to transfer to Fibre 24 January. Installation with SADV was done 30 January. Promptly the ADSL however was discontinued without any Fibre service running. Had our IT guys over here three times to try and make a connection. No luck. Phoned MWeb since two days ago, left messages, sent queries on the website. No luck. Again phoned today with IT on hand. Was told that something must be wrong with the SADV installation. Service light not on. It will however now take 3 to 6 working days to get SADV here. So, we will be without Internet - which means we cannot even print because that is done over WiFi - for maybe three weeks. Why discontinue the ADSL in the first place before there is a working Fibre connection, MWEb?