This is one occasion where I can't be much help to you. I know nothing of the sex scene in Bangalore, or anywhere else in India for that matter. I can tell you that massage parlours in London cater for both men and women, and many of the girls who work in such establishments are equally happy to pleasure a girl as they are a man, and ofttimes they are more keen to pleasure a girl, as there is less risk to themselves, either from violence by the customer, or the possibility of catching an STI.
If you want to have a sexy massage, I suggest you phone up the massage parlour in advance, and ask them if they cater for women, and whether they offer special services to women, but make sure that you specify that you want a woman to massage and pleasure you, not the guy. I'm sure that some of the massage parlours will be only too pleased to help. Alternatively, you could try calling escort services, and ask if any of the escort girls see female clients? I don't know what costs would be incurred in either a massage parlour or with an escort girl, but perhaps other people on this forum could advise you on that.