Venmo

A friend sent me $900 via Venmo 6 DAYS AGO and it still hasn’t shown up in my bank account! I checked with my bank and they are not seeing it anywhere in their system! I have tried calling Venmo and opted for the call back in 30 minutes. No call back. I am now on hold with them & have been waiting for 22 minutes! Help! Someone please tell me what more I can do to get my money! TYIA