The worst of the worse

I have been with Home Cloud for about 2 years. I was very happy with the service rendered at the beginning and used this very same portal to post a compliment! Then, a few months after joining, I requested an upgrade, which was approved. Yet, in the process, I lost my 'uncapped' night data, which I eventually (after numerous complaints and reassurance from the company that it will be sorted) just accepted and gave up on my efforts to correct it. It was never fixed. Then, more than a year later, my data has been halved, for whatever reason. I now: i) used their online customer service portal, without ANY response, ii) called the customer service number provided on the website, with 'this number is no longer in use' as a response, and iii) one email a day (to their customer service address, as well as 3 individuals within the company), which escalated to five emails a day and soon to 7, without ANY response. My question is, where does this leave me as a 'completely exposed and vulnerable' customer? Our data prices are already so high and one expects some form of protection.