You have to make sure that you do target marketing. Try hiring some experts to do PPC.
Hope you are doing good.
I have seen your concern regarding more spending so there may be some issues with campaigning setting because we can get good data by good ads strategy.To help you more first let me know what kind of ads you are running , what is product line etc,.
I do agree with you. This type of issue many businesses feel.
But we have a solution for that.
Please check the Analytics on how many people have visited on your website and how many of them are converted. Some issues are