Frustrated with FNB

Its really frustrating being with FNB. After several escalations my international purchase limit was unblocked. It is now blocked again without any prior intimation. Why you are blocking it every time without customer's consent? What you guys are doing other than ****ing off your clients? Do you want customers to complaint on this portal every time to resolve the issue? No one picks up the call no one reply to email. Do you people address the issues only after escalation? How long one should wait on the call to register complaint? I called forex today and waited for 15 minutes who is gonna pay for the call charges. #FNBSUCKS