Is there better way of function structure in ObjC?

Is there better way of 'requestMobileAuthorize' method call at once? I just want to solve this problem of logic that same function called multiple times in a function.

- nested function
- goto

if (needCheckExist) {

    [self requestCheckExistPhone:_tmpMobile completion:^(NSDictionary *result, NSError *error) {
        NSInteger statusCode = [[MLBizHandler commonHandler] statusCodeOfResultDataWithAlert:result];

        if (statusCode == 1) {//if already exist
            NSString *message = result[@"data"] && result[@"data"][@"message"] ? result[@"data"][@"message"] : nil;
            if (message) {
                [[JDFacade facade] alert:message];
            }
        } else {//not exist - but check refCode

            _refCode = result[@"data"] && result[@"data"][@"ref_code"] ? result[@"data"][@"ref_code"] : nil;
            [self requestMobileAuthorize:_tmpMobile completion:^(BOOL result) {
                if (result) {
                    [self requestUpdatePhoneAndName];
                }
            }];
        }
    }];

} else {

    [self requestMobileAuthorize:_tmpMobile completion:^(BOOL result) {
        if (result) {
            [self requestUpdatePhoneAndName];
        }
    }];
}