Sons father asking for child support back?

Sons father pays me 260 every two weeks for child support. I use the support to pay for diapers wipes, a bill or things his son needs not like i spend it on myself, I was fired in January and currently looking for work. Still no luck tho ☹️. Sons father has the nerve to ask me yesterday, that he needs his sons child support to pay his rent and he needs it now I haven’t received second child support for this month yet! is this legal? He’s manipulating and verbally abusive sometimes I’m scared of him. I’ve told him no and woke up to 8 messaged from him but didn’t want to read em. What do I do?