you need to get things in place as a temp solution - if its an outside cable fault it could drag on for weeks or months - the CS system simply tells the agent it will be fixed tomorrow which is what they repeat parrot fashion - when that does not happen they repeat it the next day and the next - in other works they are clueless
so look at a short term alternative - a 3 box on 5g will cost you about £25 a month on a 30 day contract if you are in one of their areas - or just go to another provider
BUT do not cancel the VM install even if you go elsewhere - you are due about £6 a day compensation - you might have to fight for that but if you have an install date it goes from that regardless of the excuses and BS VM may throw at you- if you do go elsewhere then cancel VM in the 1st 14 days after install and get your compensation - if you cancel the install they will stop all work so if you decide to go with them in the future you would be back at square one