Port problems!

I had a powerport placed as my veins were hard to get and thin but it didn't take long before I started having trouble, it moved but was still accessible. 3 years go by and I had to go else where for my infusions where the girls had heaps of trouble accessing my port so in February I had surgery to lift and reposition. After several goes where it was accessed once we decided to remove it and insert a new one. I now have my port on the left instead of the right side and after 3 treatments they still haven't been able to use it! I am just so over it its supposed to make it easier for me and the nursing staff instead its a nightmare we are all getting upset and I just feel like stopping treatment. I hate how it makes me feel each time they can't get it. After 5 years I just want to have break from all this sh%it. That's it.....rant over ...... I think