Incompotent Customer Care

Our company has tried for almost two years (started February 2018 with our first phone call) now to get an incorrect account off of our profile that does not belong to us. We have sent mails going back from the beginning of 2018, opened tickets, made phone calls and even went out to their office in August of this year to try and sort out this matter with no avail. The matter just gets ignored or passed on to the next person and we still receive statements for said account as well as final demands. We have two different letters of apology confirming that it has been sorted yet every month it adds up and gets sent to us. THIS COMPANY IS INCOMPOTENT AND CANNOT SORT OUT THEIR ADMIN NOR DELIVER ANY KIND OF SERVICE!