Finchoise messed with me again!! Fix my account please,

You know I've paid my account up to date with finchoice and I've had my issues with the poor service they offer but this is a new low, so on the 5th of September was my debit date and that went well off and got confirmation that the money was debited as should, to my surprise a week later it says I'm in arrears and I should pay up, I then sent an email to finchoise Wich was ignored and I sent several more, yesterday I called an was told that it will be fixed without an apology or anything from the agent, just that ok your account will be fixed, wow then again on email the same response as of its okay to put me in arrears where as I paid, amazing cos another day has passed and seems like finchoise doesn't want to fix my account as it still shows that I'm in arrears and that is affecting my credit records,not that finchoise cares as they still have not fixed my account!!!! Fix my account PLEASE ,

Don't get me wrong when finchoise wants they offer a good self help service and has moderate service I won't lie, but when they mess up like now they surely do excellent work in messing up that's for sure, the agents gets to be rude or full of it, when one calls in, time frame given was 24hours it has been 24 hours ....