bad service from vodacom

Horrible service from vodacom on the 29 May I paid my account using the vodacom app using my card details few minutes later they blocked my phone then i phone vodacom accounts department to find out whats happening the guy who took my call was so arrogant and rude and he told me that they can't locate my payment then i went to vodacom shop and made a payment, then a day later vodacom took money from my card I phoned again to get the refund still the agent was unprofessional then i phoned on the 1st June then was told to send proof that I paid twice and they will refund my money after 3 days, 4 days later i phone to follow up only then i was told that I must send another proof of payment for 4 days vodacom didn't bother to phone me and ask me for a proof, I had to phone and deal with their arrogant and rude call center agents. If they sow that i over paid why don't they have the decency to contact the client and say we need certain documents from you to refund the money you over paid I have to run after them they don't even communicate with clients I'm not even sure if they going to pay my money back or not this i the worst service I receive from vodacom I don't know if they train their call centre stuff to be arrogant because when you ask for the manager they tell you he is not available you have to talk to them I was with MTN for years i have never experienced such treatment .