Planet fitness only takes your money

My name is Jonathan Veldman im very dissapointed in planet Fitness my debit order should be R300 every month they only debit R246 when i go to the gym they say all is good now on the 28/01/2020 they debit 3 different amounts how is that possible I reversed all 3 amounts now ill go pay the R300 myself and when I go to the gym to cancel my debit order they say you cant this os the worst service ever