Bajaj Finance — credit limit decrease without any information

Address:

New Delhi, Delhi, 110059

I am using bajaj finserv card for 30 months, my credit limit was 1.5 lakhs, but the bought my limit to about 50000 without even informing me, when they increase the limit they send an sms but now they have decreased my limit, i have maintained a healthy relationship with bajaj finserv, in this two years you will not find a single emi bounce or anything. What's the point in keeping such a card, it's useless for me. On what basis credit limit is decreasing without any information and every year is getting decreasing.