Bad service using their sim card - people should not just take the FNB Connect offer

<p>I have sim card from FNB which after some time using it i was asked to take a post paid contract for airtime, data and all. FNB just decided to debit my account with R56.00 unexplained amount as and when they pleased and the debit was not even explained by a marketing person.I reversed the amount and called them to cancel that nothing happened my money never came back to me, i asked to cancel the contract and i told them am going to continue like i used to do buy my airtime as and when i please, the next thing i put R15.00 airtime on my phone i find myself unable to make calls the whole Sunday, and i discover i have airtyme balance of -R67.50, I call to ask why, I am told because i migrated to prepaid, like really, the last person i spoke to never said i would be charged for this in the first place and especially it gets to be taken from my hard earned money.</p>