I cannot recommend that you buy leadrocks.

3 Reasons:

#1 Data quality is way below competition and they seemed to not care to improve it

#2 the company is desperately pushing offers, not a good sign

#3 the marketing communication is the worst i have experiences so far. You get mails with subject lines like "FINAL NOTICE", "[12 HOURS NOTICE]", "Expired", "i am Sorry", "🔴 FINAL NOTICE", "Final call" etc. - this is such a bad copywriting practice, so you can imagine what ethics this company has....