She is not forgetting me.. she phones often.. what can i do? i am not interested to contact her.?

One day i am to go for a distant area on an official work. it is night travel. i catched the bus last minit and there is only one seat available. an old lady and her granddaughter sat and conductor asked me to sit in the 3 seated row. i asked the old lady to sit in middle between me and her grand dat. she sat. After the departure, just after half an hour, the old lady changed the seat and the young occupied. The young on deep sleep fell on me completely. i thought she was on sleep. she opened the top on and fell again in my hand which touched the top part. what can i do? i touched softly and then easily for which she cooperated. she unzipped and caught mine. This is done more than hour. while leaving she asked my mobile number. i gave and now daily she is calling me while in office giving address. suggest..may i go there? Actually, i am not interested..what can i do? i am in confused stage.