Is IMF's Growth Rate Index Reports Based on Real Data?

IMF reports the growth rate of countries to which it has lent funds. But many people from countries to which the rate is reported do not accept IMF’s inflated rate except their governments. The reason people don’t accept IMF’s inflated growth rate report is because they don’t see peoples life improved.  

People, especially economists from those countries, allege that IMF’s growth rate reports are simply based on fake data fed to it by the concerned countries government officials. They argue that concerned countries give inflated fake figures to IMF in order to please their people but the fact is that their peoples do not accept such fake growth rates based on objective realities such as unchanged living standards.  

It also is said that IMF is funded by taxpayers and in order to please its funders that their money yielded value-for-money, it reports to its funders inflated growth rate of countries to which the money is lent. If the allegation of peoples and some economists is true, doesn’t it reduce the image of IMF and cannot it be considered as irresponsive?