poor service

I have lodged a water pipe leak claim with the bank. if I lodge a complaints with the services of the service provider they supp**** me with, one of the consultants get hostile and interrogate me as if I asked for a poor service. upon finishing, they closed the main drain. both the plumbers (who happen to used my electricity for jack hammers )and builders (who used my electricity for grinder) blame each other. a request from the bank to intervene because I spend so much time on the phone trying get the service providers to complete their work. the bank did not give me the reference number for my claim.