While Avast is generally known for simple installation and solid protection, users invariably run into some snags occasionally, requiring assistance. Here are some reasons you might need to contact Avast customer service:

1. Installation Problems

Be it installing antivirus or getting rid of other software applications, one can be sure that this process will sometimes refuse to cooperate with the user. To this end, if anything troubling were to appear during installation, contacting Avast customer service would mean assistance in troubleshooting and corrective action.

2. Subscription and Licensing Queries

Issues concerning subscription status, renewal, upgrades, and similar questions come up often. The customer service team will clarify all that, as well as assist with relevant changes.

3. Technical Difficulties

In case of crashes, bugs, error messages, or anything else that makes it difficult for the program to work on a computer, the support service will be available through the customer service to provide assistance in troubleshooting the issue by themselves or forwarding useful instructions so that the software can be back in action quickly. 

4. General Inquiries

Once the general function of your tool becomes suspicious, queries about compatibility and the correct method for best use can be launched to the assistance team.