Door bell stopped working like the others have said

Door bell stops working after couple events about a month or so ago the doorbell started to go off and not stop changed out the transformer to a ring plug in style from ring itsself now the door bell works couple times then stops untill i unplug it from wall and replug in . im not to happy with ring expensive and should last longer then a year wish i could get a full refund and go with Nest instead