False advertising and billing issues

Customer service was aweful they just try to sell you things and billing is a mess they don't know how to properly apply promo credits and even added an extra line without permission.  I was promised free devices 3 different times and fell for it each time not knowing what was to come. I am not getting the credits monthly for them like I am supposed to be even called several times trying to get this fixed the first month I was able to get credit and was told they would continue them moving forward and of course they didn't apply the credits the following months. When I called back was transferred several times and on hold forever, the girl was rude and blamed me for the billing issues and would not provide anymore credits. I spent almost 4 hours on the phone trying to get this resolved and that was just this instance I have spent nearly 8 hours on the phone with them total! So frustrating. I have been a loyal customer for years but will be leaving as soon As I am able. I never would have got my dad the razor flip phone, my sons phone or my watch if I would have known I would be paying monthly for them. They were on promos advertised as free with my plan and lines. I cannot afford this huge bill but am forced to pay it. I can not spend anymore time calling and arguing and explaining over and over as they transfer me.