fee increase without notification!

I have a 24 month membership contract with virgin active, (Horizonview club) on the end of september there was a fee increase on my membership from R310.00 to R330.00. Without any notification virgin active debited my account and the transaction was rejected by my bank, on the 15/09/2017 they resubmitted the debit order and once again rejected, as the bank does not recognize the transaction. This cost me for unpaid debit orders As there was no notification that there will be a fee increase from virgin active on my account. I received a call telling me that they are unable to debit my account as it was blocked by the bank. I called virgin active on the 01/11/2017 spoke to Aiden whom advised me that there is no notes of notification on the system, and that ot is done by an external company. I requested that his manager calls me back to discuss this matter to date no one called. Virgin active wants me to pay the outstanding amount + cancellation fee should i want to cancel my contract. ( if i have received a notification i wouldve informed my bank of the increase and wouldve continued as i have done for the past 12 months.) I called again on the 22/11/2017 spoke to Jabu, who advised me that a request was put through by Aiden, on the 1/11/2017 and that she will ask her manager to call me, i received a call as i answered the call they dropped (call duration was 4 seconds). I received this email from virgin active For this reason, your contract has now been cancelled. The arrears amount outstanding is: R 987.00. Because your contract with us was terminated prior to the end of your initial term, an early termination fee of R 1,184.40 will also be app****. Should the outstanding arrears amount be successfully settled before the 20th of December 2017 we will happily waiver the early termination fee and reinstate your Virgin Active membership. Alternatively, please settle the full outstanding amount of R 2,171.40 by 20th of December 2017 to avoid being handed over to our legal collections agency. Need more info? Get in touch by calling us on ***(weekdays from 8am – 5pm). If you've already made payment in full, thank you!

To date im still waiting for a manager to call me???