Multiple deductions

Ive been having multiple problems with supersonic im so sick of doing this now the problem is that i was charged on my account after ive already paid R394.99 on the 22nd May for 28 days I was charged again on the 26th May R51.95 and once again yesterday 01/06/20 with the amount of R329.15. As far as i know im only suppose to pay R395 but what is all this im being charged for so close after each other please explain and give me my refund asap otherwise i will take this further