Gst collection by insurance company from its agents

Insurance companies are liable to pay gst (through reverse charge) on commission paid to insurance agents.

however ins.companies are deducting amount as gst from the commission paid to its agents, taking its itc credit.

and as they r liable to pay on rcm, they r paying gst to govt, and again taking credit on payment challan.

can they do so?

isnt it double benefit of itc?