Made Payment no Acknowledgement

STANDARD BANK sent my details to this company about a cheque account that was opened in 2009 forcing me to pay the. I agreed to make payment and last month was my 1st installment. i did not even receive an acknowledgment email stating that they received the money. i tried googling they details and i cant find anything on the website. they really have poor service . this month i have to make my last payment i am not even sure if they will remove my name from people that owes STANDARD BANK.