Capitec Refund

I am highly disappointed and frustrated with Capitec Bank, I bought a voucher on their app and the money was debited however I didn't receive the voucher numbers, it gave me an error, I reported the matter to them on the 6/7th of October where I was reassured that an investigation of 7 working days would take place and they would revert back to me with a refund, it's been well over 7 working days and still nothing from them, when i query I'm told its still under investigation, this is such an inconvenience as I currently need that money as i used the money i jad for something else after they told me it would take 7 days. Even now when I ask they tell me they don't know how long it would take. Capitec just refund my money please R250 may be nothing to you guys but it's a lot to me and I need it