Kindly correct the following sentences

[JRD]

1. Kindly note that they haven't received their final payment and cancellation
certificate, yet.
2.These guys are keep calling me everyday, so please arrange their final
payment and cancellation certificate as early as possible.

Thank you for your help

[Harry Smith]

2.These guys keep calling me everyday, so please arrange their final
payment and cancellation certificate as soon as it's possible.

[Anglika]

1. Kindly note that they haven't received their final payment and cancellation certificate yet. No comma
2.These guys are keep calling me every day, so please arrange for their final
payment and cancellation certificate to be issued as soon as possible/immediately.

Thank you for your help

If I was writing this!