Sick of Cell C

This is the 2nd time that I receive a sms to say my account is going to be cut off and I need to make a manual payment. Last year I paid manually and after my account was reconnected Cell c debited my account immediately . I contacted them and made an arrangement for the money to be kept in a credit as my monthly payment is only R19.95. It was agreed that the credit will be enough for 6 months. Last week Friday I received 4 sms's after each other informing me I have to make a manual payment or my account will get suspended. An hour after I received the sms's my account was cut. I called the call centre and they informed me I am 2 months in arrears and that my monthly premium is R25 - why did no one inform me of the increase?? - I never received an sms before to say that I am in arrears. I went to Nedbank ATM on friday evening and paid R130.00. I called the call centre to get my account reactivated and they informed me that I must send a proof of payment or wait 48 hours for payment to reflect. My husband wasn't home and my phone is my only means of emailing. Waited till Saturday and called again and my account was reconnected. I asked that I want my R130 refunded as they debited my account also the lady asked that I call back monday as my debited amount does not reflect. Monday called again and they confirmed the refund will take up to 7 days to reflect. Now today someone calls me and say they need the proof of payment before they can refund me. WHY???? this R130 is reflecting on my account as I paid it manually and with my cell no as reference, why do I need to send proof of payment???? I paid this at a Nedbank ATM and cleaned out my handbag on Sunday. I don't have the slip anymore. Cell C is *****ing my R130. It showing that it was paid enough proof for them to reconnect my phone but now when I need a refund they need proof of payment?How can you send a Sms to say make a manual payment but debit my account as well??? you are *****ing my money and I am sick of the pathetic service and the no worries attitude that Cell C has with my problem but when they want their money you must jump or they cut your accout. this is pathetic service and I expect my money back ASAP! PAY BACK THE MONEY