They refuse to transfer me

I have a contract with Planet Fitness at centurion Mega club, i am relocating and i asked them to move me to Just Gym because it is under them. There is no other planet fitness closer to where i am going to be staying and this means i am going to be paying 300rand everymonth and i wont be able to use their services.I cant drive to the other Planet gyms as i am a pedestrian and they told me i need to upgrade to national which will allow me to go to just gym and yet i cant afford 700r every month for gym. SInce there are only 2 Planet FItness that i know i am lost for words to what i have to do at the moment as i have been paying for the past 4 months and still not using their services because of travel issue. Please assist