I'm not suggesting it's all dodgy but it's just a bit vague..... Your first 2 sentences in your first post say you removed thd vin tags and left the car in someone's care.... I'm not sure why you'd remove vin tags in the first place? In all my years of modifying and restoring old cars I never needed to remove vin tags...
You say the garage asked you to remove the car and you did.... So you have the car then and you have the vin tags.... ?