MTS / Sistema Shyam TeleServices [SSTL] — Customer privacy data hacked and harassing customer

Address:

Chennai, Tamil Nadu, 600077

Sir,
I have been receiving calls continously for every half an hour for past two days even after my agreement for making the payment shortly. Two person spoke to me from different mobile nos. in a unprofessional manner saying MTS direct representatives for one month bill payment for my data card. i was unhappy with the way representative behaviour and I demanded an explaination and escalation to address my greiveance on the unprofessional behaviour of handling customer before making payment. But I didn't get any proper response. Meantime, Both representatives somehow hacked my priviacy data and called my husband and my uncle mobile no. without my permission and shouted at them for payment. Now am completely scared and under threat if they could able access my husband and uncle contact details without my permission and now am not sure whether my personal banking details and password are also been hacked. I request your serious attention immediately since privacy data security has been breached by MTS. Requesting your help. Thanks