Cut my service without any warning

I must say i am very disappointed in Vodacom. We put up with the bad service in general and no one ever seems to be able to help you when need be. I am one measly month behind in a payment with Vodacom and even though I see now that they did sms saying payment was due last week, which I didn't get a chance to make as I go into Vodacom and pay my account, they proceeded to cut my service today without warning! No courtesy call or even a sms, yet they can sms you about **** all the time! Yes it may be my fault for not making that payment yet but what I am furious about is that they couldn't call me to say payment is still outstanding and your service will be cut if not made today and I could have made a plan or explain to them payday is in 2 days and if I haven't made it by then, then by all means cut the service! So as usual Vodacom disappoints again, I might as well just got get myself a MTN simcard and just use that from now on.