Poorest Customer Service in the whole world

I AM REALLY DISAPPOINTED!!! JANUARY I ADVISED CELL C THAT I WILL PAY BY EFT NO ONE BOTHERED TO TELL ME THAT THERE IS A PROCESS TO BE FOLLOWED ON 15 MAY WHEN I SPOKE TO PRISHEN AN APPARENT MANAGER I ALSO TOLD HIM THAT I NO LONGER USE MY BANK ACC HOWEVER I PAY VIA EFT!! NOW I AM NOT ABLE TO GET A UPGRADE BECAUSE CELL C *********** PEOPLE THAT DIDNT CHANGE MY ACC TO CASH AFTER I ADVISED NUMEROUS TIMES I AM CASH LET A DEBIT ORDER FROM MY OLD ACCOUNT NOW I AM JUST FRUSTRATED AS THEY NEVER KEEP THEIR END!!! OR LISTEN NOW LERATO THATS A OPERATIONS MANAGER CANNOT APOLOGISE FOR INCONVENIENCE FOR HER PEOPLE NOT TELLING ME WHAT THE PROCESS IS ALL SHE SAYS CELL C IS NOT AT FAULT AT ALL AND DID NOT MAKE A MISTAKE!!!! HOW RUDE AND NO CUSTOMER CENTRIC!!! I MEAN NO MAN!!! I GENUINELY NEED THIS UPGRADE NOW THIS ITS ALWAYS SOMETHING WITH THEM AND THEY ARE ALWAYS RUDE!!!! AND SPEAK WITH SUCH ABRUPT TONES!!! NOW I HAVE TO WAIT!!! SHE WANTS TO LISTEN TO JANUARY AND FEBRUARY CALLS BUT NOT THE ONE WITH PRISHEN!!! CELL C I HAD SO MANY ISSUES WITH YOU CAN YOU FOR ONCE DO THE RIGHT THING BY YOUR CUSTOMER AS THATS WHAT I AM!!! I PAY EVERY MONTH AND THEN BASICALLY TOLD YOU DONT CARE!!!!!