Amazon doesn’t care about good customers!!!

I have been a customer for many many years, spending thousands of dollars within their company, I have all my households, beauty, vitamins, etc on subscribe and save monthly. About a month ago my account went on hold, no one can tell me exactly why and no one I speak to can help me take my account off hold, everyone has to “escalate it”, every time I call I’m told I will receive a call or email within 24 hours. I’ve been calling every single day for three weeks and haven’t received a call or email back yet!!!! Each time I call I’m reassured this time I will get a call or email. This is the way Amazon treats someone who spends thousands within their company!