I follow up ( with , on ) the payment status of the service in May. follow up on ~ report on; continue the investigation of follow up with (something) ~ do (something) next ( Sing a song and follow up with a dance. ) I think you mean follow up on .
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tildetdouspart1.I follow up (follow up on ~ report on; continue the investigation ofwith, on) the payment status of the service in May.
tildetdouspart2. I upload the document