My dabit order is wrong from the time I joined

I joined Virgin Active in November the woman told me because I joined now in February Virgin Active will pay me R345 back so I said okay the 1st of December my debit order went off R401 that was wrong I called in they said we so sorry we had a problems with lot peoples debit orders the right debit order that should have went off was R345 they said to me next month my debit order will be R289 next month on the 1st my debit order went off R401 I called in and was very angry they said no we so sorry we'll sort it out next month you'll only pay R228 we'll sort it out this month the debit order went off R299 after that they put in my account R299 they phoned me on the 23 to say I didn't pay them really is this the way this survive works to people who are members