Billing increase

I just viewed my bill and noticed a substantial increase.  After numerous attempts to reach a person I finally got through and spoke with Angelica.  I questioned increase and she informed me that I was on a promotion that had expired.  I asked when was I informed this promotion was expiring?  She said we don't do that.  I also mentioned that I was suppose to be getting $10 credit monthly for paperless billing and auto pay. Again like a robot she mentioned promotion expired.  I asked what promotions are available now? She said nothing.  So I asked what do you offer an existing long time customer with excellent credit history?  Again response was nothing.  I asked about retention offer, said nothing.  I am quite disturbed that during these times your employees are encouraging customers to seek other options.  Looking forward to hearing from you.