UPC physical cable not present

Has anyone else ordered UPC but not had a cable physically present? My estate was recently wired up and it seems that most houses have a cable present. Mine doesn't - at some point before I bought the house someone built a wall between my house and my neighbour and the cable isn't present between the 2 houses. The cable is present at other house, so the cable has likely either been buried under the wall or cut. The cables seem to run from an access point beside the kerb under the garden and come up just at the house. There's no UPC point in the house - it would need to be installed but there's obviously no cable to run into the house.

I've been on to UPC (I ordered before Christmas) but they're being slow about investigating whether the cable is there or not and if it can be restored. They're suggesting it can take up to 8 weeks just to obtain permission to dig up the footpath but to my knowledge they haven't done any actual investigation yet.

Has this happened to anyone else? How was it resolved and how long did it take?