Cards cancelled without warning!!!

FNB have dismally failed me on numerous occasions but they have really outdone themselves this time. The Card Division cancelled both my Cheque and Debit Cards without even contacting me, let alone sms'ing me beforehand. These cards have not even reached their expiry date and I feel this is totally unacceptable and unprofessional. I seriously can't deal with FNB's unending incompetency any longer! That being said, I demand FNB to resolve my issue as soon as possible. I am totally disappointed AGAIN, FNB needs to get its act together, C'mon!!!!