TDS Telecommunications

I just got off one of the most ridiculous customer support calls I've ever had. I cannot believe that TDS would not allow an existing customer to change from one monthly promotional plan to another contracted promotional plan. The excuse that this internet promotion is ONLY for new customers is absurd. For someone who has been a customer for 2 years now, I have never experienced worse service from a company than I have experienced from TDS. I am currently browsing other providers, even at the risk of paying more, just to get out from this ridiculous umbrella of horrible TDS service. Not only am I paying for a plan that does NOT provide me the internet speeds that I am paying for, but now I can't receive a service that fits my exact needs? Ridiculous...absolutely stupid.