Bad service by Identity Head Office

I am irritated by Identity head office regarding a payment I made on the 15 April that has been allocated to my thruworths acc that has long been payed up in January 2020 instead of my Identity acc that I'm owing. I have called their head office spoke to a lady called (Joslen) and a guy called (Adam Cameron) all promised to reverse the payment to the correct account and I should not make any payments until the matter has been resolved to date I am still being harassed by call center agents demanding payments and sms with wrong balance, plz help