Nannyelephant

Hi, I'm a wacky old bird, love being round my children and grandchildren (and him indoors even - sometimes ) I got my car when I retired a bit early from many years of being a paediatric doctor, and am now trying to get it sorted as it had a few problems. Mechanic/Electrician guy coming on the 5th January 2021 so hopefully all will be ok. Him indoors however has today said the front door lock does not work ? Anyone got any ideas please - I'm good at cooking and doctoring and all my crafts but mechanics just washes over my head like a large dose of Senokot