519-258-2333 · 1-888-310-6674

MNSi Support

Allow our professional and courteous staff to help you!

Customer Service


If you have questions about billing or payments, our customer service staff is waiting to help you during normal business hours. When calling for customer service press option 1.

During the COVID-19 Pandemic we have modified office hours. The office is closed to the public but we are still accepting calls.

Monday to Friday 8:00 AM to 5:00 PM
Saturday Closed
Sunday Closed
Chatham: 519-436-1199
London: 519-433-4811
Sarnia: 519-344-2237
Windsor: 519-258-2333
Toll Free: 1-888-310-6674
Business Sales: 519-985-8415
Customer Service: accounts@mnsi.net
Business Sales: sales@mnsi.net
Billing Information and FAQ

Technical Support


If you are having issues with your service or you have a question of a technical nature our technical support staff is waiting to help you 24/7. When calling for tech support press option 2.

Chatham: 519-436-1199
London: 519-433-4811
Sarnia: 519-344-2237
Windsor: 519-258-2333
Toll Free: 1-888-310-6674
Business Sales: 519-985-8415
E-mail: support@mnsi.net

Speed Test

If you need to check your connection speed you can use:

Test your Internet connection speed at Speedtest.net

Underground Fibre Construction

For information about MNSi's underground fibre construction click here

MNSi News


Free TV Previews Until May 31

Wednesday 6th of May 2020 03:55 PM

Here's a list of channels currently available for free for television customers.

Free Super Channel Stations until April 30

Thursday 19th of March 2020 01:44 PM

Effective now, until April 30, MNSi Telecom Television customers will receive a free preview of all Super Channel stations (788, 789, 791, 793) to help with those self-isolating.

MNSi Office Temporarily Closed to the Public

Wednesday 18th of March 2020 04:57 PM

Due to the COVID-19 Pandemic, our office will be closed to the public. For support, customer service and billing inquiries please call our office at 519-258-2333.

COVID-19 Update - March 16, 2020

Monday 16th of March 2020 09:56 AM

Due to the COVID-19 Pandemic, we will no longer be accepting cash payment in our offices. You may continue to pay your bill through credit card, debit or online bill payment through your bank. We also ask that for the protection of our employees, if you have travelled to a foreign country (including the United States) in the past 14 days, you please do not enter our offices, instead call us by phone at 519-258-2333. If you are exhibiting any cold or flu like symptoms we would ask that you please not enter our offices, instead call us by phone at 519-258-2333. Thank you for your cooperation with these temporary measures.

First Area in Belle River is Fibre Ready

Tuesday 11th of June 2019 10:05 AM

Hwy 22, Rourke Line, Oakwood, Westwood, Lakewood, Whitewood, Bayberry, Rue Labbe, Beachwood, Driftwood, Foxwood, Birchwood, Elmwood, Cherrywood, Walnut, Greenwood, Ashwood, Redwood, Southwood, Willowwood, Maplewood, Diesbourg, Marie, Trotter, Charron, W. Belle River, St. Pierre, and Park Lane are now Fibre ready.


Support Articles


TV Channels missing? Let's fix that!

Friday 31st of January 2020 09:30 AM

Guide to show missing channels.



MNSi services are subject to our Internet Access Agreement and other policies. Please review our Documents & Polices for details.