I had an extremely disappointing experience with Santander's customer service. After receiving suspicious email and text regarding a new account, I contacted Santander for clarification. Despite their assurances that no account application had been made, I later discovered that an unknown mobile number and email address had been added to my account. The customer service team failed to confirm the legitimacy of the emails and texts I received, leaving me feeling vulnerable and unsure. Despite my efforts they still allowed opening an account and authorising an overdraft. To address the issue, I lodged a complaint few times, which has been ongoing for a staggering 44 days without any resolution. During this time, my access to my accounts was blocked twice- first time with my knowledge and new access information sent to me and the second time a month later without any notification or new login details sent out. Despite my repeated attempts, including numerous phone call and emails over the past two weeks, to chase up the complaint and regain access, I have received no valid response or assistance from the customer service team. This lack of communication and support from Santander has been highly frustrating and has caused significant inconvenience. As a result, I have been unable to carry out essential banking activities and have experienced financial and personal disruption. Overall, my experience with Santander's customer service has been highly unsatisfactory. Very weak security, the prolonged complaint process, lack of communication, and the blocking of account access without notice demonstrate a severe lack of care and professionalism. I strongly advise against using Santander's services based on my personal experience.