HELP ME ANYBODY IN MTN

I was contacted in March for an upgrade and did it via telephone but phoned back the next day to cxl it. Unfortunately I saw they had deducted the new installment off my account in April and since then I have phoned and sent 12 emails to get my money back and my old contract re instated but nobody is responding and they have just deducted more money for May This is the last email I sent Enough is enough – I NEED HELP URGENTLY AND I HAVE COPIED MY LAWYER AS WELL AS I HAVE NOW BEEN CHARGED FOR ANOTHER MONTH (APRIL AND MAY) FOR A CONTRACT THAT I NEVER UPGRADED – I STILL HAVE MY OLD CONTRACT AND MY PHONE AND I DEMAND THAT YOU CHANGE MY CONTRACT BACK TO MY ORIGINAL CONTRACT AND REFUND ME THE MONEY DEDECTED FOR AN UPGRADE I NEVER DID I DID NOT UPGRADE OR TAKE POSSESION OF A NEW PHONE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!