I sent a happy message to a much loved family member. I'm going to change the details so it's not outing. But something like 'I'm going to buy you a gift'. Only the message appears to have been read back-to-front and received as 'I'm never going to buy you a gift'. The receiver of my message has gone apoplectic. They sent me a long missive remonstrating with me for my 'extreme selfishness & lack of consideration for others for not buying said gift' etc etc. In their anger, they've gone around telling a few people about my message & I've been blocked on several fronts. I was beside myself with shock when I got their reply & in tears at their vitriol. I tried to phone to iron things out but I'm not being answered. I feel absolutely terrible as I've done nothing wrong. I can't iron out this complete misunderstanding if everyone keeps their back to me. There is no-one to act as a go-between, so I guess I just have to sit and suffer for as long as this lasts. 
I've never experienced anything like this before with this person.