PLANET FITNESS CHANGING AMOUNTS AS THEY PLEASE

Please can someone explain why my original package (R699 per month) is now R949 per month??

I upgraded my package shortly after joining as I had vitality, which changed the amount to R224 per month. I then switched medical aids a few months later (I know this will not include vitality then) and suddenly the amount jumps to +- R930 per month? Why is it not back to the R699 per month? I DO NOT WANT A MEMBERSHIP WITH YOU ANY LONGER. If I am being penalised for the vitality why do I need to pay more than the original package! This does not make sense!