Acked data being resend sometimes

I have the following capture made via wireshark. For e.g. in line 96 it send the post request then it get OK ack in line 98. Again in line 99 it keep sending the same thing. I have check my application is only sending it ones. What could be going on at the network layer? I dont see the repetition at the application layer. Because if its a bug in my app then it should be always repeating it. But it happens only sometimes. Just to add on those without problem I notice this [ACK] Seq=1. The value is always 1 for the Seq and with those there is not repetition?

96  375.163057921   *.*.*.23   
*.*.*.12    HTTP/XML    592 POST /*********.asmx?WSDL HTTP/1.1  
97 
375.166722899   *.*.*.12    *.*.*.23    TCP 66  80?56912 [ACK] Seq=3068 Ack=1819 Win=130304 Len=0 TSval=18755499 TSecr=1624042020 
98 
375.244932864   *.*.*.12    *.*.*.23    HTTP/XML    714 HTTP/1.1 200 OK  
99 
375.244987515   *.*.*.23    *.*.*.12    TCP 66  56912?80 [ACK] Seq=1819 Ack=3716 Win=25600 Len=0 TSval=1624042102 TSecr=18755506 
100
375.302667374   *.*.*.23    *.*.*.12    TCP 449 [TCP segment of a reassembled PDU] 101 375.302702201   *.*.*.23   
*.*.*.12    HTTP/XML    592 POST /*********.asmx?WSDL HTTP/1.1  
102
375.306998164   *.*.*.12    *.*.*.23    TCP 66  80?56912 [ACK] Seq=3716 Ack=2728 Win=131328 Len=0 TSval=18755513 TSecr=1624042160 
103
375.399607915   *.*.*.12    *.*.*.23    HTTP/XML    714 HTTP/1.1 200 OK  
104
375.399705590   *.*.*.23    *.*.*.12    TCP 66  56912?80 [ACK] Seq=2728 Ack=4364 Win=26880 Len=0 TSval=1624042257 TSecr=18755522
105
375.456699174   *.*.*.23    *.*.*.12    TCP 449 [TCP segment of a reassembled PDU] 106 375.456734111   *.*.*.23   
*.*.*.12    HTTP/XML    592 POST /*********.asmx?WSDL HTTP/1.1  
107
375.463896220   *.*.*.12    *.*.*.23    TCP 66  80?56912 [ACK] Seq=4364 Ack=3637 Win=130304 Len=0 TSval=18755528 TSecr=1624042314