Cell C double debit still not repaid, Useless accounts went and allocated this amount because I was in a credit. AFTER THEY TOLD ME TWICE I WILL BE REFUNDED

So after being double debited in March in error I logged calls spoke to multiple people at cell C and they advised that they will refund me with 7 days. I logged a case 28th march follow ups continued and I was assured on more than one occasion that I will be refunded. Today I call them guess what those useless people at Cell C tell me. Since I was in a Credit for one month they went and allocated that payment for April. now my question is this. WHO THE HELL GAVE YOU CELL C AUTHORITY TO MAKE FINANCIAL DECISIONS ON BEHALF OF THE CUSTOMER, YOU SAID YOU WILL REFUND ME YOU THEN GO AND MAKE A U TURN AND DECIDE WHAT IS BEST FOR ME SINCE I WAS WAITING FOR ME

LIKE SERIOSLY WHAT THE ACTUAL HELL IS HAPPENING AT CELL C. YOU ARE ALL A USELESS BUNCH I HAVE HAD IT FROM GENERAL WORKERS TO CALL CENTRE AGENTS TO TEAM LATDERS TO SUPERVISORS TO MANGERS TO EXECUTIVE BOARD ALL THE WAY TO CEO, you all dont know how to allocate a payment since JAN, you resolved that but your have proven yourselves useless again because you all collectively FINANCE team billing team Back office team you do not know ho to refund customers after that you have debited them twice in error YOUR MISTAKE not the customers YOUR mistake, THEN YOU STILL GO AND DECIDE YOU WILL NOT REFUND THE CUSTOMER AFTER YOU HAVE SAID YOU WOULD

This is the 3rd time since January you messed up my account since January first you never allocated a payment I made in Jan then i could not upgrade because you said i missed payments which flagged my account for early collection but you never allocated the payment not me then now again you debit me twice for no apparent reason just because you feel you can and on top of that you say you will refund me, then you change you mind without talking to me the customer, me waiting for this refund only to be told your useless finance team made a decision without consulting with me the customer first.

I rest my case i will never get good service from you and that's just fact

case: ***