Over payment

I’ve received an sms with a payment link attached that my account is in arrears , I then paid an amount of R529 immediately and after two hours they(rain) debited my account with the same amount that I’ve paid R529. I’ve phoned them and they’ve promised to refund me the R529 and they haven’t done that to date . My details Name: Marcia R Mogoane Cell no: *** Emai: ***