L.W.
My advice to you is to not react to them. To not respond in any way. Always gear your conversations concerning your child to only the father and no one else. If you have to talk to someone else in his family make sure it's only about the child. If I were you, have someone else with you to be a witness. If they send you emails, letters or whatever, save it. Document everything. If they happen to call, let it go to voicemail so they can leave a message if they choose. If they do and they have a legitimate question or concern, return their call but either have a witness there while you have them on speaker or record the conversation. Tell them before hand that you are recording the conversation. If they choose not to be recorded, hang up. You have to protect yourself. We have to do this unfortunately with my pyscho stepdaughter who is determined to destroy us (she has freely admitted this to be true). You can block their email addresses from your email or simply change your email and do not allow them to have it. Block them for facebook, myspace or whatever as well. This includes the father. You are only required to provide him your contact information, phone and address. No need for him to have the other information. Block them completely from ever contacting you. If you don't react or reply they will eventually back off. You can't allow them to get to you. If I allowed my stepdaughter to get to me, I wouldn't be sane nor would I be here. Don't allow them to have that power of you. It may come to a point where you have to request some sort of no contact order and in order to do so, you will need to have proof of the harrassment. So document and keep everything they send to you. I've blocked our pyscho from contacting me on the internet completely. The only avenue she has to contact us is in writing which is fine because that just helps our case againist her. Do whatever it takes to protect you and your child. You do not need this stress. Take the power away from them. The sooner you realize you have that capability the happier you will be. Good luck!