Poor Poor Connection - Why even bother purchasing voda products at this point?

I bought a Mobile Wifi router last year just before September 2020. The connection was great and I never had any problems. Fast forward to November 2020 and I kid you not the connection is very very poor. Ive previously called the call centre to enquire about this and was told the engineers are monitoring the area. Has the connection improved? No, its gotten worse. I cant even connect to the wifi anymore. This is such an inconvience! When will this be looked into because at this point the wifi does not connect at all!! The last 7 months have been *******.