HSBC
Harasing calls

Constantly receive calls every 45 minutes from this company. They are blocking their number. When asked for a company name was told cannot disclose that information that john was calling regarding a personal matter. Asked for a phone number and was told that they would try later. So itold them that I know who they are and would be launching a formal complaint to the authorities. John opertator just keeped saying hu. Must have a grade 3 education or some thing. What can be done for them misreresenting and not disclosing for such a simply request?

thanks

shelley