<human>:  If a company has invested in advertising and marketing but has not seen an immediate ROI, what strategies could they use to increase their ROI?
<bot>: One strategy for increasing their ROI is to focus on personalizing their advertising and marketing campaigns. This includes targeting specific audiences with messages that resonate with them and creating different campaigns for different demographics. Additionally, running A/B tests on different variations of their campaigns can help to determine which messages, visuals, and strategies are most effective for their specific audience. Another strategy is to optimize their website's conversion rate. This means testing different website layouts, incorporating user-friendly features, and making sure website elements such as forms and images are optimized for mobile. Finally, the company could consider investing in PPC (pay-per-click) or retargeting campaigns, which can quickly drive more high-quality traffic to their site.