I agree changed locks and phone and tell him every thing you are not happy with...but
Please remember just because they did not fill the benchmark or gwn does not mean that the guy is not corgi reg'ed, lots of corgi reg'ed people are lazy and don’t fill in the benchmark.
So ask for the guy’s corgi reg number
If he is corgi reg'ed get the benchmark filled in
Get the install gwn
And on Monday phone corgi and get them to have a look at the install
Please remember just because they did not fill the benchmark or gwn does not mean that the guy is not corgi reg'ed, lots of corgi reg'ed people are lazy and don’t fill in the benchmark.
So ask for the guy’s corgi reg number
If he is corgi reg'ed get the benchmark filled in
Get the install gwn
And on Monday phone corgi and get them to have a look at the install