Too much downtime

I've joined up with Sonic Telecoms on their Fixed Wireless Boradband services about 7-8yrs ago after having a very bad experience with another ISP. About 2yrs ago, Fibre was provided in our area and I switched from wireless to Fibre with them as well. During all this time Sonic's service was exceptional in comparison with what heard and read about other ISPs and I referred a few friends and family to them as well as a result. Approximatley a year ago we started experiencing more internet down time whereas in the past it was almost unheard of to experience a loss in connection. Now for the last 6-10 mths we've had plenty down time, much more than one ever experienced and it's not come to the point that it's jus totally abusud. On 13 February we had a major one where we had no connection for about 2 days and the Fibre provider Vumatel was blamed for the loss in connection. Today as we speak we have yet another loss in connection which is hugely frustrating to stay the least, hence once got to the point that u r considering changing ISPs, but with only Vumatel in the area, it might not help much.