Frustrated!!!!!

Good day, I am so tired of getting unprofessional service from Ackerman's, because they themselves do not allocate payments from the bank. The whole year I have been paying and not complaints but once a year someone is not doing their job. August 2020 and now this month. The companies they outsource are much worse, Rosalia from Norman Bissett & Associates has the audacity to tell me they will ITC me, if I do not go into Ackermans office, after I told her the payment has been made 29/11/2021, i have the proof of payment. After numerous emails to Normin Bisset and Associates and ***, no one can tell me what now....should I take the silence as all is good or wait until they ITC me. Can you please give me someone equipt and professional to send the proof of payment. This is really exhausting when you pay on time a matte fact more and this is how Ackersmans and ki deals with their clients.