Samsung M22 Vibration Issue

My Samsung M22 phone hasn't been vibrating for the past seven days, and I haven't been able to figure out why. It does not vibrate when incoming calls or messages are received. In spite of the fact that there is a warranty, they are demanding payment for the service, and the service center has indicated that it will take twenty days to return the phone. What am I supposed to do if I don't have access to a phone for the next 20 days? I want a free-of-charge repair or exchange as soon as possible.