Hauwei and wifi problems

So my phone is about a year and 2 months old and i NEVER had so much issues with an device!

My wifi has stoped working in like the 7 month. This is costing me to buy data as i have wifi at home and work and cant use it with my P8 lite.

I have been trying to contact hauwei about this problem and no one can assist me. Telling me I have to take my shop to the nearest Hauwei centre. Why should i pay to fix a problem Hauwei caused?? Its not just me having this problem.

Please resolve this issue as it started when i updated my software.

Thank you