"Cardiologist referral "

gp referred me in January still awaiting an appointment 9 months after !! shocking,I’ve had to use my funeral savings to go private £2,600 for scans only to find chest pains caused by moderate to severe blocked lad artery and diagonal

how long do you have to wait for an nhs appointment these days I have essential thrombocythemia blood cancer causing high platelets which puts me high risk of clots ect and already on high blood pressure medication I’ve already had previous dvts and Haematoma x2