Inconsistent service

I am an account holder at Fnb, I bought airtime this morning via cellphone banking and it went through on my account,but my airtime balance is still R0.00, as I wanted to send an e-wallet via cellphone banking but I couldn't since I cant access my airtime. Then decided to do it online then it told me that I have exceeded my online e-wallet limit of which its R1500 and I have not done any e-wallet today, then I called again at the call centre and they busy transferring me to different departments and its so frustrating, cause I just want to use my money! I am very unhappy with the prolonging and delayed service.