Service tax collected with different rate

Hi Respected Members/Experts

I have a query regarding service tax collection

A contractor collects service tax with different rates for one registration certificate likewise…….

Labour with material with VAT supply for the purpose of new plumbing work  and some time only labor for same work.

Detail as below.

Service Tax Charged @ 2.472%

Service Tax Charged @ 4.944%                                                                                

Service Tax Charged @ 6.18%

Service Tax charged @ 12.36%

My question is how we file the return, is the above is allowed for a single service tax certificate holder.

While filling how do we define the detail?

Appreciate for your reply and suggestions.

Regards

Renu