From Hood to Very Bad Service in 1 month

I have being a Customer of Home Cloud for about 2 years (12976). There service has good. Until this December that just Passed. I requested a Data Upgrade. So from the 1st till the 20th December my WiFi was either None Exsisting or No WiFi. I could not even update my computer. It keeped on saying no internet Connection. If my Wife and I connected with our Tablets we immediately had a Exclamation mark next to our WiFi connection Signal. Home Cloud tried to say it was my Route. I changed Routers but the same thing happened. They ask me to change setti g4s on my Router, but still it did not work. Then on the 20th they must of fixed something because I had WiFi. Not as far as I had previously, but I can start downloading again. Still unhappy with the speed, Home Cloud just ignored all my Emails and Whatsapp messages. They sent me my invoice for January and then expected me to have another month of Bad service. I again tried to get them to sort out my WiFi, and again they ignored my Emails. Then on the 30th December they cut my WiFi and erased my Leftover Data. Not even waiting till end of the Month which I paid for. Still ignoring my Email. Some how they went for Good Service to Bad Service in 1 month. I will not pay for Bad Service. Untill someone contacts me with a solution, they will not see 1 more cent from me.