The Krankenkasses do not give us receipts against the payment of German social insurance (including health insurance). This is because of the very strict German data protection laws. If you would like to ask for the receipts of your social insurance payments, please call your social insurance provider directly (e.g. AOK Hessen, TK, etc.), quote your social security number and they will confirm the payment of the social insurance and send you a letter with the receipts to your home address.