We do not do the processing the purchasing as Lethe Studios and we do not claim any right to get the informations about your credit cards.. The reason is that the process is being made by your personal e-mail account through Apple App Store or Google Play. 

After every purchasing, a bill is being sent to you by Apple or Google through e-mail. (But if there is any difference between the purchasing and the sending, it is being made by Google and Apple.)