Call centre increasing limits after i declined

I Love YDE, but i had a very alarming experience, i received a call from *** at about 11:07am, someone called me and asked to speak me, i said that i am speaking, they asked if i would be interested in increasing my credit limit, i said no thanks, the consultant said ohk no problem and said bye, then hung up the phone few mins later i got an sms stating the following "Congrats , u've been granted a new YDE account limit of R3150"., after i had clearly said no she continued to increase my limit, what alarms me is that no security checks was done only thing she confirmed was name, i could have been a *********, second thing is i did not give consent to do a credit check and thirs is after i clear said no she acknowledged me rejecting and still continued. I am very upset, this is how people go into debt. I am really disappointed this is my first negative experience with yde