That sounds familiar...
Denny, they weren't what I'd consider "friends", they were "acquaintances" who knew who to call for free, multiskilled labour; in short, you were being used...
I don't consider "friendship" to include a "tit for tat" scenario but, a friend will be there if/when you need help in any way &, adversly, as a friend, you would be there to help them...
A few months ago, I had a bit of a mental breakdown, I wasn't in a good way or a good place; one of my closest friends (ironically, an ex) dragged her mother out & drove for almost an hour at night to come & pick me up & take me to her house where I stayed & recouperated for 2 weeks; in that 2 weeks, I put her & my daughter through he!! & I have done anything & everything I can since to make up for it...
Another very close friend (whom I've known for almost 30 years) knew nothing about this situation until it was over; once he found out, he said to me "you know I'm always here for you; even if you want to come over & ball your eyes out, I'll be here"... & I know he would be...