MrP call center

I got an sms to say my account was in arrears. I paid my account on the 24th of February already. I call the number on the sms and the lady I speak to does not bother to hear me out she just jumps in and asks is there any reason I did not pay my account and this is how much I need to pay In March. I tell her I paid she says please send proof of payment to ********** I do just that. I call to find out if they received it. No they guy puts my call on hold for 15 minutes. I don’t care if the call is free but that’s my time. I eventually hang up and then call again just to get told that the department is closed. Could he not have just requested that I call back on Monday or whatever day not put me on hold. As I a client I don’t appreciate being given the run around. I expect assistance. That’s what you hired your team for, to give us service. I’m very annoyed and I want this issues resolved ASAP.