BLOCKED DRAIN ! ! !

Well I inherited the most stupid drainage system out some years ago, I had intended to rectify this but it never materialised. At the great old age of 68 soon to become 78 I really don't need the upheaval? So I'm stuck with this arrangement whereby both the dish washer & washing machine plus the sink all empty into the same drain. So today was one of the days it decided to block grr.
Anyway I've only had a slight result but hopefully " A," will do the difficult unenviable task of dismantling the whole system on Thursday.( he had done it before but age is against him now I feel & 2 knee replacements. ) Still he's only 19 going on 29 very soon.
However if I expect to participate on the Zoom group tonight I best do some reading . Hope you have had a good day & will enjoy your evening.