Spark Broadband — router/wifi not working

Address:

Mumbai City, Maharashtra, 400013

I have register 4-5 complaints for the wifi is not working properly & have to change the password too!!!...
Complaint no & dates
1) tkt no. Cs302086 (Date: 1st june 2017)
2) tkt no :cs302462. (Date: 3rd june 2017)
3) tkt no :cr305839 (Date: 23rd june 2017)
4) tkt no :cs306976. (Date: 30th june 2017)
5) tkt no :cs312497.
This is the complaint no.

Still engineer is not visited at my place and i'm not able to contact on this no +[protected] it's showing busy how can i contact the customer care