"Worst experience in terms of getting appointment"

I have never experienced an appointment as hard to get as the one I have been experiencing at this practice since signing up to it nearly two years ago when we moved into its vicinity. Despite claims by the practice manager in response to a number of comments here that patients can get advance appointments, my experience is the complete opposite of what is being claimed. For instance, for the last one week I have been trying to talk to a doctor after being texted by the surgery to get in touch to discuss my blood test results, however my attempts so far to do so have been in vain. I have been calling every day, and each time I have had to wait on the telephone for more than 10 minutes to get through to the reception only to be told that no booking is available. If i ask to book an appointment in advance for the next available day, I would be told to call again the next day. Once, I managed to get telephone appointment with a doctor in the afternoon but when they called I was driving my children back home from their school and therefore could not attend. The doctor made two calls in quick succession and when I called back after pulling over to a safe place, I was told by the reception that I had missed my appointment. I was literally about to cry. I am seriously thinking of switching to some new GP surgery.