I got a letter saying I was due an appointment, emailed them to book me in at the start of this month, my appointment is in the middle of July over four months

I got a letter saying I was due an appointment, emailed them to book me in at the start of this month, my appointment is in the middle of July over four months later. And I am one of the luckier ones in that I actually have a dentist. A lot of people in the country can't even access one. This country is an absolute joke and I am also getting out.