Spectrum is the worst of the lot in terms of playing ball. TWC and Comcast before them were both quite decent to work with in terms of pricing. Spectrum just doesn't give a shit. My favorite was when they first took over TWC I called to get a better deal. "Sure, we'll give you internet for $35/mo for the next year." Two weeks later it went up to $45. I called to ask WTF and their new deal is to offer discounts instead of better rates, so they gave me a $10 discount and then promptly raised my rate $10. "Well you're still getting the discount."
They also charge the same rate for their 2 slowest tiers, so you can't even call and downgrade your service because it won't save you any money. I pay $45+TTL and there's really nothing I can do about it. I can switch to ATT, but they're actually much worse in a variety of ways. For all of their price gouging Spectrum doesn't have caps and doesn't throttle your service. Personally, I'd rather pay less for slower, which they don't offer, but I wont pay less for a smaller allowance (ATT). It is what it is.
The only thing I can recommend is, if you haven't already, buy your own cable modem. They're probably charging $15/mo for those things by now, and they only cost $20 used on eBay. My guess is that pretty soon they'll start charging a $15 "convenience fee" for using your own modem, because "fuck yeah, capitalism," but for the time being it saves you money.