Citibank Sucks, Makemytrip sucks, Dell sucks.

I had bad experience with all 3 above mentioned companies. I mean their customer service. And trust me, I am not a fussy / demanding customer. Just a regular guy who wants things to work and nothing more.
Dell made me wait couple of hrs to answer a query on tracking for a ~ 1200$ laptop. I could have bought another laptop if I utilised the time in better manner.
Makemytrip took my money, failed to book tickets, and then took their own sweet time to compensate me. Being a lazy idiot I am, I didn't care to encash their cheque. :(
Now comes latest tormentor. Citibank sends me sms to verify address/contact details related to my card. I try to find their 24/7 phone. Their website sucks. and after some creative searching, I call them. I was asked to recite my autobiography. DOB, address, card no and last 2 transactions. I told them I don't remember. And the lady on other end says "I can't help". I tell her "this sinner didn't request for your help, he called you because you have asked him to and he wants to find the reason why you sent that SMS". The poor lady can't answer. My irrational side comes back. I call to investigate and find answers to these fundamental question and also complain about poor answering capability of previous recepient.
No change in answers. A restricted multiple choice isn't enough for all kinds of customers. I demand to get superior on the phone. My request granted. Apology for inconvenience which isn't clearly defined. Fine, my ego massaged, now lets det down to real issue. This lady says SMS was sent to update my details (when there is no change in universal truths like DOB, address..) , help me....blah,blah.
I said, I can't understand your proposed help. And unfortunately I can't remember my last 2 transactions. Now hang me, cancel my card. "Sorry Sir, we can't do that without you providing details". Enough said.