Accepting only bitcoin in this environment is unacceptable given the high fees and long wait times for confirmation. Previously, Heritage would credit your account immediately once the bitcoin was on the blockchain but now they require a confirmation which will take forever even with high fees.
I've been with Heritage for over 10 years but sorry to say, they will get left in the dust if they don't start accepting other coins with better confirm times. Bitcoin is a dinosaur compared to some of the superior altcoins.