If my estimated refund date has passed and I have not received my refund, how much longer should I have to wait?

According to the IRS, your refund could hit your account 1-5 days after it is sent by the Internal Revenue Service because banks vary in how and when they credit funds.

https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions

Did you end up receiving your return? 

my estimated refund date has passed

TT dates are just that: estimates, based on the IRS goal of 21 days.  But it can take longer.

Tax Season Refund Frequently Asked Questions | Internal Revenue Service (irs.gov)