is this normal usual?

I have voluntarily and willingly sent money to my son and the family for all sorts of things necessity, holidays, uniforms Christmas They live 4 hours away will travel anywhere but here I have met the children twice My daughter in law was very cross because I couldn't work out what I needed to do with a wowcher I had bought for a pleasure park they wanted to go to
She sent an email complaining I sent her all 10 of the emails me asking for help and they stalling as hey were busy and now my son told me I am trying to control them using my money Money I had saved from work and my pension The savings I use for hem and pay myself back from my pension They have not rung since so I rang once and he made it clear that he was only responding to my message because it concerned the power of attorney, not for casual conversation clear he was only answering my message as it was about the power of attorney no chatter just answered the question I am hurting is this normal I thought we got on, and it was a long way to bring the boys They go abroad and see the in laws and friends