So angry at level 0 customer service

I previously had an account with Mobicred about 2 years ago. Then their service was great and had no issues. I tried to reopen the account in December 2018 and they said it wouldn't be a problem. I am still waiting for an approval and I have called numerous times in the last 4 months. Either they don't answer their phone or when they do answer (the 4 or 5 times they eventually answered) I got told they don't know why it's taking so long and they will resend to the finance department and give me feedback soonest. Til this day and after each and every phonecall I have still not received the feed back. My emails don't get answered at all. I find this service has reached level 0 in customer service and completely rude and ridiculous to treat customers this way. I am so angry that not one staff member has made any effort to return my emails or calls and this is so pathetic. How do they run a business like this ?