Not interested

I actually am very irritated because i have been paying ethekwini municipality for many years online and i just feel that if they changed their banking details the site sud never allow you to pay that recipient based on the fact that the account closed but here i am paying for months on end just to now be told the monies have not reached the municpality and i then went into my account online and sent 2 messages for them to respond and as yet no response from FNB I mean how easy is banking suppose to be if the account is incorrect or closed are they not supposed to have put it back into my account instead of it sitting in one of their accounts earning interest. I just feel that if that money rejected to a closed account and if fnb put it back into the orignating account i would have queried the account with the municipality but no they did not and no one seems to beable to help get those back that that have gone astray. I am very dissapointed with my bankers especially since i have been with them over 20 years through ups and downs so if they want to contact me then please it will be a miracle R R Pandaram