You vastly overestimate the security of safes. It might take a while and you might kill a few drill bits in the process, but you could definitely drill through most safes, especially in home installations.
As far as relockers go, you've already resorted to destructive methods. If you find that it's worth opening after drilling, then you'll find a way in.
As far as relockers go, you've already resorted to destructive methods. If you find that it's worth opening after drilling, then you'll find a way in.