salaam,
1) 22:15, in my view, is addressing people "who wordships God on edge," (22:11) .. They would turn away from belief when test is given to them... and so they are the ones who are at loss.
2) These people asks help from other than God. (22:12-13) ...because,
3) (22:15) ..they have no faith in God.
Hence,
in 22:15, it says they should find all kinds of way (including asking God, and, also includes deceit): motives, connection (i take it to mean "network": it can be friends, brain's neutron connections, jin and bomoh, etc..),
find those means even in the sky or space (alien's help?)..mana2 tempat that you can...
and then "cut (it) off" --> let whatever be, be? Now it's the time to sit and observe how things work..
Why? Because,
(22:16) this is how God shows evidences/signs.
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* "what angers/enrages (him)" could means, whatever issues that he has no faith in God to help him.