If it’s a shared driveway , presumably it’s not in a public area covered by the NRSWA , which gives rights to utility company’s to excavate, perhaps it’s permissions from the owner(s) has to be gained that is causing the delay ( if this isn’t solely your own driveway ) ,
If it were simply the case of excavation on your ‘land’ it’s possible the delay would be less ( but that’s speculation on my part ), but I suspect it’s not simply the case that you have been ‘forgotten’ , blocked ducts on ‘standard’ installs ( so the blocked duct is under the public footpath or under the customers own garden ) are commonplace and can be done an a very short ‘daily whereabouts’ type notice to the council.
If you could do some of the ‘civils’ yourself , obviously that would reduce or remove the need for OR to do that work, perhaps getting a freely moving draw rope between where the Openreach duct is against your house wall and the curtilage of the private driveway.
