Understanding Service Quality Models: How Do Different Dimensions Impact Customer Experience?

The service quality model and various service quality dimensions.

Please tell me about the right to use tax in the service provider business because our company provides the car on a lease basis for one, two, or three years, and bills are made every three months.

Invoice Type:
- Bill Amount: $25,000
- Service Tax @ 4.944%: $1,236
- DVAT 12.5%: $3,125
Total Bill Amount: $29,361

I want to know if it is possible to include two taxes in one bill. Please guide me.