A month old invoice not accepted by the party

Hi all,
Heres my query...

Invoice was raised in April 2019 but the company rejected the material.
The following bill was considered in GSTR3B and liability paid off.

Now couple of days back the company is ready to accept the same material but on May invoice.

Now what should I do since I've already paid GST on previous invoice.
Can the April invoice be enforceable somehow?

Thanks