bad service

I have been struggling with refund from Vodam,you receive mail stating they are busy with the refund, and it will take 5 - 7 working days since you receive a mail. The provide with contact number to phone and then you need to speak to them Via what's up. after making a call once again on the refund you receive sms stating there is outstanding documents but with the first mail that was send all the supporting documents was send.Vodacom can quickly phone if you are in arrears with account, as a customer of Vodacom never been in arrears on my account, and this is the service you receive, I will never refer any clients to Vodacom after service the service they treat the there standing customers