Angola Airlines definitely did have some 707's up until fairly recently. However, as to whether any are still flying I have no idea. The last I heard, they were still un-hushkitted.
The Angolan Government operates a 707 - but that is not in Angola Airlines colours.
As for the VC-10, as Jetstream said must have been an IL-62. There are no more civil VC-10's left flying
