Very bad service from fnb

Fnb ewallet is very much disappointing, on the 23 Sep someone sent me R1000 which I withdrew and on the 27 sep someone else sent me R500. Thats when the problems started, I tried withdrawing but it have an error. It was starting to show that I have -R498 balance, Fnb call centre as useless as it is made me wait when i called them to inquire and gave me half baked answers which are hard to understand. I have lost 500 on ewallet which both senders didn't receive back Fnb are saying it's hanging and they are not sure where it will be reversed to. It's frustrating.