Vodacom Stole My Money And Will Not Refund Me

To cut a long story short, Elite Mobile upgraded 2 of my contracts to the wrong contracts. One of the numbers had a twin sim and I lost one of the sim connections. I did not have data for a whole month and Vodacom charged me for that month and never refunded me! Then Elite Mobile had the cheek to charge me R300 for the upgrade fee even though they had made this huge mistake and caused all the trouble. Elite Moble did this in 2016 as well to me!!! They refused to refund this!!! Finally I got data but am still missing one sim card (the twin) but decided I could not take it anymore and moved on. I was tired of all the emails and phone calls. Today I see they took R1092.50 off my account as a migration cost at the end of May 19 PLUS double charged me for the one number. Can you believe the cheek?!!! The manager at Vodacom in March 19 promised me I would be compensated with free data and would get my money back. She said I definitely would not have to pay a migration fee and apologised profusely to me for all the inconvenience to me. Her name is Margeaux. Now this????!!!! I really do not know what to do anymore???!!! They have simply ****** money from me again. I would like a full refund