Disregard to ********** Activity

I have emailed Mr Price repeatedly to advise that they have a customer that has opened an account with them using MY email address. I have been receiving welcome emails and Mr Price deals from Mr Price and it is clear someone has opened an account with you using my email address. This concerns me because just recently, someone used my email address to try and open up a twitter account, where I received a verification email. Mr Price was advised of this and I requested the name of their customer clearly committing ***** and to-date, I have not received a response from Mr Price, and I continue to receive emails from them. Their blatant disconcern is disgusting, to say the least!