unable to activate username and password on fiber

I have ordered a unlimited home 20mbps fiber link on the 30th of May and got it installed on 6 June and thought this was quick and i am happy. But that is where my problems started , i was told to wait 24 to 48 hours for a username and password. The 48 hours came and gone and every time i phone they will tell me it will get activated i just have to wait. it was only when i phoned back on the 13th that they realized nothing is happening on my account that they logged a call to back office to activate my account and i should just wait 24 to 48 hours again. By the 18th nothing has happened and i phoned again and was told to speak to technical department as they are suppose to give me a username and password. Phoned technical department and was told my TIN number is not active and i should speak to sales, so i phoned up sales again and they confirmed that there is no progress on my call or TIN number to be activated so they are going to send a mail to back office to get this fixed and i should just wait 24 to 48 hours and it will be sorted. By the 23d i havent heard anything back so i phoned sales back and was told the same story that i need to speak to technical department, i said that they wont be able to help me as my TIN number is not active and they confirmed that and was told they cant do it from their side but they will send a mail to back office and promise that i will be send a username and password within 24 to 48 hours. By the 26th i still didnt hear back from them so i rang up sales and we went through the whole story again but they can see there is a request for 4meg line on my name but its not active, I told them i had a 4mbps line years ago but i requested a 20mbps line. So they proceeded with sending another mail to service desk manager requesting an update as the call was still not updated and i should just wait 24 to 48 hours and i will receive feedback. On the 2nd of July i didnt hear back so i phoned sales and as soon as i explained my problem i was told to speak to technical department and was transferred immediately. Spoke to technical department and surprise surprise they could not help me because the account was not active yet. so i phoned sales back again explained my problem went through the whole routine again until they figured out that they cant activate my TIN number and back office has to do it they proceeded to send a mail. i told them that after 6 weeks of them just sending mails i can tell that this is not working cant we speak to someone and get it activated so that i can get a username and password. I was told no as this is the way it works there they send a mail and it will get sorted this way and was promised that they are going to send this mail to the manager and the it department and i will have my username withing 24 to 48 hours. It is now the 4th and havent received any notification on when this username or password will come, i just want to cancel the service now and go with another ISP and know i will have my username and password within an hour but they cant even cancel it anymore because apparently the order is already through the system. i think i was reasonable throughout this month of waiting just for a password can someone please just update me on how long it takes to get a username and password I DONT KNOW WHAT TO DO ANYMORE