worst service ever received.

I would like to express the worst customer service experience with I received from SARS.I Changed my banking details 2 months ago and uploaded all documents and also did follow up with sars by calling them to verify If all documents were submitted.Everytime I call they tell me new documents is needed when i upload it and speak to a different person they tell me other documents is needed. I have been waiting very long for my refund and agents and the Team Leaders advise there nothing they can do to help me. The SARs staff are *********** and have a don't care attitude when helping clients. they don't go the extra mile to help. I'm heading towards my 3rd 21 days without any refund and I'm really tired that i need to wait because of agents not advising me correctly and team leaders that cannot help. Sars your service is bad .I never experience team leader that cannot go the extra mile for clients