What should a person do to get his internet activated if o2 can't handle it ?

I have signed up for DSL tariff since I came her 6 weeks ago , I was promised an appointment after 3 weeks which is already very long period for a student to stay without internet given that other internet providers promised me that it takes only 2 weeks but I naively went with o2 thinking they have a good service . 3 weeks has passed and on the day of activation no body came at all and I've waited from 8 am in the morning till 6 pm . I also got no messages on that day that the technician wont come in fact i got a confirmation SMS & email . On the following day I called to check what's wrong and the said the technician wrote a note in the end of the day that the appointment didn't just happen . the customer service agent then promised me that ill be getting an appointment after 10 days and then i was sent an email from o2 that the appointment is in fact will be in 15 days. The 15 days has passed and on the promised day the technician called on 11:30 to tell me that something is wrong where i live technically and that he wont even come on that day. Then  i got an call the following day to get a third appointment in which the agent promised me that it will be exactly on the next Friday from 8 to 12 and of course after that I received an email with absolutely different date which is after Friday by 5 days again which is on Wednesday the 3rd of November . Now of course nobody will come on that day and I'm done wasting my time waiting for a technician to come so my question is : Is getting internet working for somebody is just a mere joke to you ? now I don't know if you know how the world run but a I don't think anybody can operate without it now and I'm a masters student that has to go through a lot of efforts , waisted time and money because you cant keep up with your promise . I was even going to get a mobile phone tariff contract but I was luckily saved because i can only get the discount when my internet get activated . Now the tariff I signed up for is for students so that should give you a clue of how desperate I am for inherent and all I'm think of now that this is some sort of negligence or act of racism against me given that my neighbor that comes from the same country i come from had to go through the same story 3 times now . And lastly back to my question and its an honest one that i need an answer for really , IS OUR TIME JUST A JOKE TO YOU ?!