"Though having the opportunity to take pure faith, other living entities take a distorted faith,which is compared to the light reflected from water. The light is broken and the image not intact. When people with distorted faith receive the holy name, the name that they take is also distorted. Such people are characterized by deeply rooted desire for enjoyment and liberation, to the extent that they strive day and night to fulfill their desires for enjoyment and liberation. Because such people may use the name, they may appear to have faith in the name, but this is not actual faith. If one takes to the name with that faith, no matter how long one continues, one will not progress to purification, but will remain at the same perverted stage continually. Instead, such practice usually leads to mayavada mentality, and finally one becomes a cheater. Such a person thinks that the holy name is simply a means to a higher end, and by such mentality the glory and power of the name become lost. The only result is offense.
"Here is the difference between real namabhasa, where due to obstruction the effects of the name are felt faintly, and distorted namabhasa. In real namabhasa, many anarthas may be generated out of ignorance and weakness of heart, but all these effects can be cleared by continual chanting of the name. However, in distorted namabhasa born from cheating knowledge, offenses simply increase. This is not called namabhasa but nama-aparadha.
Harinam Cinatamani Chapter 3 - Namabhasa