Absolutely Atrocious Customer Support

I have/had a subscription that was yearly pre-paid.  I purchased a redemption code for another year (of the exact same plan - CC Photography 1TB) from a 3rd party retailer (Newegg), and like any normal sane person would, expected that when I redeemed the code it would extend my current plan.  Instead however it started a new plan, which created an overlap of about a month between when the old plan ended and new one starts.  So I contacted customer support, and the first rep told me that he/she would cancel the new plan and then send me a new redemption code within 5-7 days that I could then redeem when the previous plan ended.

That was on Nov. 20th.  Since then, I have heard nothing.  On Dec. 2nd (nearly 2 weeks later), I checked my account and saw that the new plan was still associated with my account, and that the support case was still showing as active.  So I replied to the support case detailing what the previous CS rep had said would happen, and included a screenshot of the conversation.

Fast forward another 2 weeks, on Dec. 17th, when my old plan was about to auto-renew, I checked again and found that the new plan had disappeared.  I went ahead and cancelled the old plan because I definitely did not want to be charged for another year, and then checked the support case and saw there has been no updates to it at all.  So I contacted CS again, and the only response I got was that my support case has been escalated and I would get a response in 24-48 hours.  It's now been two days since, and I once again have had zero communication from customer support, and since I had to cancel the old plan, also no access to the apps that I've paid for.

This is possibly the absolute worst customer service experience I've ever had, and I continue to have no way of actually reaching anybody who's capable of helping, because like every other tech company Adobe is doing the damndest to make sure you can't find a phone number to call, but instead have to deal with a useless AI virtual assistant.