Fnc connect customer service

I have paid up both my cell phone contracts in full and fnb had an option for the top-up packages to be loaded on these devices ,i have canceled these top-up packages on my devices in june and the lady advised me that these top up packges will be cancelled by the end of June ,its now the end of July and FNB is still debiting me for these top up packages ,when i follwed up they are telling that i only advised them to cancel the one top up package ,this is really disappointing service from fnb connect ,when you submit a complaint they take forever to contact you ,then they will send you an email stating that they have tried to contact you and dont bother contacting you again ,i feel like they are doing this deliberately