Basement egress window re-occurring leaks

[Henry Lazerow]

Anyone experienced similar issues with basement egress windows? I have a 1960s brick 4 unit and each unit has these windows in basement which all leak when we get even moderate rainfall. We have had two different contractors try to fix using various types of cement/epoxy while digging up outside area and they can not seem to get it right but have decreased the water a bit. The building is in a cheaper suburb value only $250k range so I want to get this done affordably and need do all 4 units. Any ideas or expected costs? Maybe even just brick it up if the city allows? Below photo.....