State Bank Of India [SBI] — Internet banking updating new mobile no via OTP on both the number option

Address: 274001

It is really a mockery of system that the SBI the most reputed PSB has come up with.At the one hand they claim in their aids that "aapka bank aapke jeb me" on the other hand for every important service one has to visit one's account branch for completion of it, really pathetic.
I have been trying to update my mobile no by regular procedure by navigating to my profile section after successfully logged in.Then entering profile password and selecting option to change mobile no through domestic hyperlink - entering new mobile no in the both places provided..then after verifying they ask for debit card details which i duly provide then i have received OTP with 13 digit reference no on my both mobile, which had to sent to this no 567676.
I don't know what kind of magical no is this "567676".
Believe me or not i have waisted my entire day and have tried it 5-6 times.
Same mundane procedure i have been repetitively following but when it actually nailed down to sending the OTP and reference no to 567676 it is FAILING TIME AND AGAIN.
I am purposefully keeping it in caps because 6 times i completed the procedure and when i am sending the message to 567676, i don't know ON WHAT SERVER this no is operating on it has not received my message.
While i was writing this complain i tried again this time same thing happened and i got really irritated and wrote this complain.
I called SBI care team they are saying sir you need to visit your branch only.
I mean what the heck is this? If it has to be done via branch only why provide that option and claim that online option are available.
Leave that OTP thing other options are not working too.
My question to SBI and whosoever from SBI consumer forum team is reviewing my mail please see to it that whatever services you are offering works fine by seeing end to end integration of service by dummy testing it.
Here you are claiming that new option via domestic thing can change but at the end what kind of godforsaken no you have choosen (567676) where the messages are not getting delivered at all.