Lost without my babies!

After a long drawn out game filled divorce,on both of our parts my children were slowy alienated from me. The children at ages 10 and 12 said they didn't want to visit with me so supervised visits were agreed. The visits started out 3 times a week. They never wanted to leave the building with me. The visits turned into 2 a week then 1 a week then to once every other week. I would do everything. We had picnics there, carved pumpkins for Halloween, celebrated Christmas and birthdays. After a few years of visitation there they eventually didn't want to come. One of the reasons were that dad was to busy to bring them in. I didn't see them at all for 2 years after that. I never missed an event that I wouldn't bring a gift into the centre for their dad to pick up for them and I would always call and always got the answering machine. The centre finally told their dad that they weren't a parcel drop off and that the children were old enough to visit on their own. They were 17 and 15. The kids started to see me again but they were still very influenced by dad. The only reason I know this was one day my son left his cell phone at my house and I was very green to them. His dad sent a text to my son and it asked him all about this person I had here doing some electrical work. (His dad thought I was in a relationship with him) My kids asked me for many items. I did everything I could without going broke. Finally I stopped and told them I couldn't afford it. They would rarely visit without asking me for something or money. I would ask my son for some help with the house and he was moreless told not to. My daughter was coming around as well but she was put in the same position. Later I found out that she would be two faced with me. Now my son doesn't visit at all since he has got some money I had put away for him for college and I have just found out that my daughter was hiding me from her dad. When she was confronted with seeing me she lied to the person and told them that she never sees me at all and that I never had wished her a happy birthday that recently passed. I was on facebook and was getting bullied so I deleted my account (it's for the best anyways). They (my ex and girlfriend) still go on about me. I was told that my ex's girlfriend wrote on my daughter's page that I wasn't meant to be a mother because I didn't wish my daughter a happy birthday ( my daughter was obviously asked if I contacted her for her birthday and she lied about it saying I didn't even wish her one) Meanwhile I did....she was here and I gave her a present) she has lied to them for the past 8 months about seeing me. I am so frustrated with this whole mess!!!! Wishing there was some kind of support group in my town! Some councellors don't even know what to tell me. They say to be patient that they might come around after leaving dad's house .. maybe at the age of 25. I am having a hard time coping! I have missed their graduations....their everything! I miss them terribly!