contact number calltech

Information Communication Technology Services 


billion group logo calltech technologies

In 2021 Dr Sisa Ngebulana, Executive Chairman from Billion Group,
acquired majority shares within CallTech Technologies (Pty) Ltd. 

Sisa Ngebulana
Sisa Ngebulana
CEO of Billion Group and Director at CallTech Technologies

BJuris, LLB, LLM, D.Comm

Michelle Henrico
Michelle Henrico
CEO at CallTech Technolgies

MS System Engineer & PM Prince II, Information Technology Diploma

Vuyokazi Njongwe
Vuyokazi Njongwe
Commercial Director of Billion Group and Director at CallTech Technologies

B.Iuris, LLB, H.Dip Tax

CallTech team
Welcome to
CallTech Technologies.

We specialize in Microsoft, AWS and Cyber Security System Infrastructure design, implementations and the professional managed services (SLA). Our talented IT Architects, System Specialists, Engineers and Technicians will professionally manage your Software and Hardware Infrastructure requirements.


We have established partnerships with companies like Microsoft, AWS and Kaspersky, striving towards delivering a broader spectrum of services.

CallTech is committed to conduct business compliance with market requirements. We use Prince II and Microsoft methodologies in our projects. Our image remain integrity and passion in Business to Business ICT Services.

team collaborate

CallTech Technologies value you as a client and as a trusted brand in the industry, we deliver value for money, quality services and products.


Our mission is to utilize our skilled personnel to:

• Closely meet the unique Information Technology needs of each customer
• Clearly differentiate our solutions customized for each client.
• Offer superior services
• Competitive pricing
• Value for money
• Offer partnerships in growing small businesses to known name brands