Hathway — Receiving daily spam calls

My name is Nishanth K my connection no:[protected] .Iam going outstation for 1 month so I did’nt renew my plan for that I received calls from hathway I informed to the executive he also said I will noted down sir.but till now im daily receiving calls more than three times a day your plan expired renew sir I already said im going outstation .then why Im keep on receiving calls from hatchway its torturing for me