Apollo Clinic — package rate for health checkup

Enquired package for health checkup on 10th nov 2017 at 7 pm and i was told 4380 and when i go over there on 11th nov 2017 the front office said there is a increase and i need to pay 300 rs more. They have accepted that they have not updated prices in system and hence i need to pay. Is that right? If i were in ur front office position i will bear from my pocket. Hence i did not got check up at ur clinic at apollo nizampet hyd and u lost a customer