VERY VERY frustrating accounts handling and refunds

Battle to get refund of a credit on your account at Ampath. I see other clients complained about the same issue! I am battling now for a month without any success to get my refund. Every time new forms and admin nonsense. They asked for a refund form to be completed and proof of bank account. After follow up telephonically I was told they received everything and my refund will be paid 7 days later. Today (17 days later) an email, requesting the original proof of payment of my account early January...although the money is in their bank for 6 weeks already? How can you work like that? Why not ask all the needed documents in the beginning of the process? This is to earn interest on the client's money.