Tecno Mobile — after warranty not proper repair in service center

Address:

Thane, Maharashtra, 400605

After warranty i repaired my phone in service center but after 7 to 10 days again i faced same problem because he is not proper repair my phone and they not provided me any payment receipt and they said me if your phone will spoiled u come and i will check and they said me i have already entry your information and garranty no warranty so please you call them and said proper repair phones and i will visit there and if they will not repair my phone again so i will police complaint