Harassment from collectors?

Harassment from collectors?

I am in the process of paying off two of my credit cards, One is a little over 500.00 on it and the other has about 4k from medical bills and has gone to collections. My plan was to send as little to the one on collections as possible so I could pay off the other one intirely on my next check to stop it from being sent to collections and then start paying 200-300 dollar payments to the collection company for the other one. The problem is that even though Im sending 50.00 - 100.00 a month to the one in collections Im getting calls every hour on the hour starting at 8am and ending at 9 30 pm I never pick up but that have been leaving threats on my machine stating "If you dont start sending us more money now we will have to make things harder for you Mrs Humphrey" They have also made statements such as "We will make it so you can never get a loan or house for the rest of your life" Is this legal!?? I mean Im paying as much as I can and when I first talked to them they said that they would not call as long as I made some form of payment.
My Yard.

My Yard.

Some tips please

Some tips please

Garden picspam

Garden picspam

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A cyclamen question & a hosta question

Picture & picture request

Picture & picture request

Lavender

Lavender