I need a little help to repair/recover a corrupt AMR file.

Due to phone crash while being on a call, the recorded audio file was saved but cannot be played. So I tried different methods to repair and play the file but in vein.

Lately while searching, I came across about and surprisingly they can repair the file. But it costs too much like a few hundreds $$$.

So what I wish, is there any software(paid or free) or any ways which can solve this problem ?

Thanks and sorry for any mistake.

May you all have wonderful days ahead.