Macro to delete rows

Hello.

Can anyone please help me in writing the macro, I have a work book with all the customer invoices information, that is very big file and we are maintaining the cumulative data . Let me explain the internal process, some time finance team is holding some hours with some specific reason, once it is solved they will bill the remaining hours. Now my question is I want to check the Hours variance column first and delete the repeated “+” and “– “Hours (AH3 cell “+44” hours and AH8 Cell “-44” hours, project ID and Sales month and Customer is same) and the condition is if project id, sales month and customer is matching

E-Column – Project ID
F-Column – Sales Month
R-Column – Customer
AH-Column – Hours Variance

Intention of requesting the macro help is we want to concentrate on not billed cases only, it is very difficult to check manually each entries

As per the attached file macro should delete S.No 1 and 6 to 10 rows

Hope it is clear

Attached the sample data for more clarifications


Regards
Sagar