I hope you will understand that nganopyaban is quite messy. sometimes I might not be able to answer you promptly, but I will call back as soon as possible please tell me from time to time you talk to me.
I hope you will understand that the nurse is busy. Sometimes I may not answer you right away, but I will call you back as soon as possible. Please tell the time is convenient for you to talk to me.
I hope you will understand that the nursing work quite busy. Sometimes I may not be able to answer you in immediately, but I'll call you back as soon as possible. Please tell the moment you convenient to talk to me.