poor customer service

i have been going back and fought with Cellc to make payment since November 2021. After battling they finally sent account number where i can make the money payment. I made payment of 6140 as requested on the 2 April of which by today it should have appeared but they cant allocate the funds.All i need is paid up letter, we have already wasted enough time but seemingly they still want to waste more, i called several times no assistance at all. We are talking about money here its frastrating not to know where my money went & im tired of this journey