Very low quality products used and they charged you a very high rate, if this is dzire petrol then 5W30 oil along with liqui moly flush is needed if the condition of old oil is bad, otherwise just an oil change, for oil either go with Shell Helix Ultra 0W30 or Amsoil. Castrol Magnatec 5W30 and Shell Helix HX8 are great options on their price, for throttle body cleaner don't spray it like that just take in a microfiber towel and clean, for that use good brands like 3M or Sheeba or whatever reputed brand you get.
