Account problems

Hello!

I am having a problems with my internet account.  I noticed several commercials advertising special prices for basic Internet services. I am now retired, and on a limited budget, and watching every penny I spend for any kind of utilities. So, I decided to ask if there was any special offers available to me before I went ahead and canceled the service which is getting to be very expensive I was paying over $50 a month for basic Internet service. I called and spoke with a representative who is obviously not from the United States I believe probably the Philippines. I explained my situation, and she seem to be somewhat helpful and said I would be able to take advantage of a program where I would only be paying $30 a month total for my Internet service.  She said I would need to open a new account and cancel the old one. I said that would be fine. All I care about is saving a few dollars every month and the $30 offer was very appealing to me of course. She then asked me for a $50 deposit to open a new account which I gave her. I thought everything was done and paid for and the next bill would be a credit actually for the $50 payment I made. When I receive the next bill, I find out that it’s still the same amount. In fact, it appears I have two accounts now that the one account was never canceled. So I contacted Xfinity via online chat and tried to straighten everything out. The representative I spoke to was not very helpful. She kept asking for account numbers regardless of my giving her my address and phone number information so I tried to provide all the information I could. She did eventually find both accounts and asked me if I wanted to cancel them. I said I want to cancel one, but I want to keep one account open , that would be the $30 per month as I was promised. She never guaranteed me the $30 a month but went ahead and canceled one of the two accounts. I asked her about the amount of billing for the next month and she said it would all be straightened out. I had to be patient and the system would change and show me , the difference in price. That was several weeks ago I am still showing $52.54 amount due. So, it looks like nothing has changed. Actually, I did give $50 and have nothing to show for it. I’m now paying the same amount I paid before and of course I’ve lost that $50 deposit I made. Can someone please help me?