The next door neighbours to a house i rent to a pensioner lady have been calling me and visiting my place of work to complain about the noise coming from my house? I have spoken to other neighbours and they think these people are being difficult, and the lady in my house is lovely, but i need to know do i as the home owner have any responsibility here or is it down to the tenant? I don't want her to be a pain, but i don't think she really is, so what am i obliged to do about it?